If this was the case then I'd expect more people to be a lot more open here on the boards about playing all different styles of D&D and not getting bent out of shape that the game does things they don't like. If they have no choice but to play with huge numbers of random people... then they should be much more open about how they play.That's a very narrow view of the hobby. There are many people playing at conventions, at game stores and, more and more, online. Understanding the community and the general desires of "other players" makes for a broader pool of players. The isolated group is increasingly the minority, I think.
But that doesn't seem often to be the case. Rather, people are just as fixated now as ever on how they think D&D should play... and how WotC keeps messing that up by introducing changes here and there... making it more and more likely that that person will never be able to find a game at a convention, game store or online. If you have a set way of playing D&D and you need to play that way and only that way... then you're going to have to work extra-hard to find a group that can match.
That's the whole reason for actually playing in a home group (or established online group)-- you can get a group of players that WILL play in exactly the style you want your D&D to be and you can play that way consistently. And at that point, it doesn't matter what WotC or any other player does to the game.