There is one FLGS in my town that's been pretty bad. I'll be polite and not name names (unless somebody really needs/wants to know).
It started out five years ago as a Comic Book/Gaming/Anime/Collectable Toy store, trying to be a one stop fanboy/geek shop. The usual shelves of comic books and back-issue boxes, a bookcase of RPG's with a rack of those newfangled Mage Knight minis that were just coming out, and a huge back Anime room where you could rent the videos or buy them right off the shelf and he'd reorder them and restock the shelves, as well as old toys from the 70's & 80's that were being sold for small fortunes.
Well, this all started to go downhill quickly, as it became clear that the owner only really cared about the comic books and the rest were just there because they'd sell a little and pad out the store. His "roleplaying game" section was a small bookcase with the newest WotC and White Wolf releases, and a few linear feet of random books he picked up at a liquidation auction somewhere. It became crystal clear that he didn't know what he was saying with regards to RPG's when the Wheel of Time game came out, and he asked me for advice on it. He was baffled that this strange book came in that seemed like D&D, but it wasn't for D&D or any D&D setting he'd heard of (i.e. the Realms). I had to explain to him that it was an RPG based on a series of fantasy novels (he'd never heard of Wheel of Time) and that it was using the d20 system but not D&D (he never understood that part, either it was D&D or it wasn't, I eventually just broke down and said it was another D&D setting book, just because it was all he could understand).
He claimed he could get anything, and he meant anything by special order, with regards to RPG's, Comics, Anime, or anything fanboyish. My fiancee wanted a specific anime soundtrack CD, which he looked up in his catalogs and said he could order it and it would come in the next tuesday and cost "X" dollars (I don't recall actually how much, but he cited a price). She came back the next week, and it wasn't in, but he promised it would be in the next week. She kept coming in for two months, every week, asking. She gave up after 8 or 9 weeks of promises and tracked the disc down elsewhere, bought it, had it shipped, and was listening to it regularly. Then, about six months later she just decided to drop in to that store again randomly, having largely forgotten about the order. He says that the disc finally just came in, and it will cost 4X dollars (i.e. 4 times what he cited). She says that she gave up after months of false promises and it had now been about 8 or 9 months since she first placed the order. He said in no uncertain terms, she had ordered it, so she was buying it for 4X dollars or she was never going to be allowed in that store again. She stormed out and never went back.
Then, his special ordering of Anime went down the tubes. Again, his plan was to have a video-store type arrangement where you could rent videos from him, or buy them right off the shelf and he'd restock. Apparently this was working too well, because he was having to reorder a lot of videos as they were getting bought. A friend of mine went to there to buy a box-set of a series he had on his shelf, and was told in no uncertain terms he didn't sell the videos anymore. He'd be happy to special order a copy of the box set and it would be in "next tuesday", but end of story, he wasn't selling things off the shelf anymore because he hated having to reorder things. When my friend said he liked to actually buy things off of a shelf instead of ordering out of a catalog and picking them up days later, the owner of the store told my friend to leave and go buy it at the video store in the Mall. He did, and never came back.
His Anime plan also abused the Anime club at the local University. During the summer of 2001, we didn't have access to the University meeting facilities since they were closed for the summer. He offered to let us have meetings at his store. So we did, and we watched our tapes and had our meetings in his back room. Our members did a little shopping while they were there, and we gained a few new members from his clientele, so we both benefited from this arrangement. However, after the Fall semester began and we started meeting back on campus, his attitude changed. Every time a member would post to our listserv about a new tape that was coming out, or something they had bought or ordered, he would chide them on the list for not shopping at his store, and remind everybody about his store and extole us to only shop with him. This became interpreted as spam as so many posts were followed up with a sales pitch from him, so he was ejected from the list by club vote. We were about to buy a gift in gratitude for his hospitality over the summer, when he told the club officers that in no uncertain terms, he wanted the club to disband as a university organization, and become a wholly owned publicity arm of his store, and he wanted to take ownership of the club treasury and it's fairly extensive tape and disc library. When we said no, he was fairly spiteful with the club officers, saying that we owed him big for everything he did for us, and we'd been ungrateful for not giving him more business and we'd never succeed without being a part of his store (the club had existed for about 4 years at that point).
Lastly, he kept growing his inventory of old toys to sell. At one point he'd bought a huge lot of old GI Joe toys from the 80's, and his backroom was cluttered with vehicles, bases, parts & pieces. He knew I was a big fan of these toys, and still had a fair amount from when I was a kid. He asked me to come in and make these toys viable for sale. He wanted me to clean them up, sort them, piece them together, and generally turn this bulk lot of dirty toys probably from some attic or garage into salable merchandise. He said I could probably do it in 6 or 8 hours since I knew what parts went with what, while it would take him several days to look it all up online and figure it out. I asked how much was he willing to pay me for it. He acted deeply offended, and said that I should come in and do it because I was "his friend", and that I should be happy to come in and be friendly with him. So, he wanted me to spend about 8 hours of unpaid work for his store to turn a bulk lot of material he bought at a yard sale for about $50 into refined merchandise he'd later put up for resale for $1000 total. I never did do the free labor for him, and he always seemed upset with me for not being "friendly" to him by doing that. Not long after that I stopped regularly going by that store.
So, I visited it one more time a few weeks ago. It was the first time in probably three years I'd been there. The anime section was completely gone, the RPG section was just a cast-off bookcase in a forgotten corner of the store (I had to actually search for it) that had no books less than a year old, the toys were buried and largely forgotten in another part of the store, the only games that were prominently displayed were racks of CCG cards. 90%+ of the store's volume was now a dedicated comic book store, and the backroom was now hosting a Yu-Gi-Oh tournament. I noticed that the parts of the store where I had always gotten bad service were now gone, and that the comics (the thing the owner actually cared about) were what now received all the attention.
