I really hate people like this. I bet they all have more than enough money to buy the books too, right? They're just too cheap and scummy to do it and so the leach off everyone around them.
We've got one player that went through a nasty divorce where cash might be an issue, but yeah... Everybody could afford at least their own copy of the PHB I'm sure.
Players not having their own copy of the PHB used to get on my nerves, but it really doesn't bother me now. I just put a little thought into what I personally consider worth spending money on in entertainment products and my own place in the gaming industry.
On occasion, I'll go over to a friend's house and play
Monopoly with him and his family. Doesn't make me feel like I am under any obligation to go out and purchase my own copy of
Monopoly. I wouldn't play it anywhere else, it'd sit in the closet. I go over to another friend's house and watch
the Matrix with her while we cook supper. Doesn't make me feel obligated to purchase my own copy just because I saw it at a friend's house and happened to enjoy it.
From this perspective, I can sorta understand why a player might consider their money better spent on other things. I'm sure when DDI was designed, they accounted for a certain amount of falloff for book sales due to this sort of thing. I'd prefer that my players be more interested in knowing the rules for themselves, but I'm not going to twist their arms about it.
On a more basic level, I'm a consumer in the RPG industry, not a producer. My role in the product chain is to buy product--not hustle books for WotC. Someone pays their bills by figuring out how to get D&D material into my hands and the hands of my players, and those people decided that DDI was a way to do it. Other consumers have decided that DDI meets their needs in this arena. When my players show up to my game with their Mountain Dew, should I really have an opinion as to whether they brought it in 12-ounce cans, 20-ounce bottles, or 2-liter bottles? Should I really care if they bought their own pencils or another player loans them one? It's not my business to tell other people in which format they need to purchase things, it's their money. Someone in a company decided to sell their product in that format and someone with money decided to buy it in that format. Same thing with their characters. I don't really care if they own their own books or a friend lets them use DDI. I figure I'll let they guys who make the product worry about getting it into our hands and relegate myself to playing the game.