I disagree. Just because the game's publisher declares "that's where the game is now" doesn't force or compel me or anyone else to follow it; and I\m often baffled at how so many people who purport to really like the game the way it is at time X still insist on abandoning it for something that may or may not be as good just because that's what the publisher wants them to do.
If you're playing a version of the game that suits you and works for you, be it 0e or 1e or 3e or 4e or whatever, it's both easier and cheaper to just stay with it forever.
OK, so what will these same people do when 6e drops? Will they decide to abandon their collective investment in 5e for that, even though they wouldn't for 2e? If no, and they stick with 5e, I can respect that. But if yes...well... <holding tongue> ...