Agreed."No one plays Game X" really means "no one I've talked to locally plays it," at best. It certainly doesn't reflect anything about the larger world, as regional differences can and do exist -- we've heard from college kids on this board that some schools are all 4E, others are all Pathfinder -- and even then, it's probably just the vocal gaming clubs at each school -- and others don't play anything D&D-related at all.
You would be surprised to find how hard it was to find an actual D&D game in Austin back in the early 1990s.
And at the same time, M:tG was blowing up. Stores couldn't keep an edition in stock more than a couple of weeks after Alpha... Except that one of my FLGses down there routinely was able to get cards months after the rest of Austin was sold out. I asked the owner about it one day. He had a buddy who owned a gaming store in Los Angelis who just knew the game was flying off of shelves all over the place, so he ordered lots of it.
And for him, they sold like poop-scented Mother's Day cards.
So in order to recoup his money, he sold them to his buddy in Austin, who then sold the cardboard crack to the gamers of Texas.