As far as the SNG world it's already changed to a rec/newbie/bingo player environment with spin and gos and hyper turbos dominating all the games that take off. That isn't to say regs won't have edges in these but it's much thinner then a decent structure yet the rake is still too much for a game that last such a short period of time.
For these types of games I don't really hate a rakeback grinder who returns a small roi from actual play and gets the rest in rakeback because their edge is thin and they have to deal with higher variance then other sng formats.
As for the guy who grinds out a half bb per hundred hands or even is a slight loser but can make $70k a year because of rakeback incentives in cash games then I think that player might realize it's actually time to make tweaks to improve their game.
Then you have re-entry tournaments which are not really rec friendly when it's the regs who are more inclined to reenter if they see value.
The recs who reenter might take a while but eventually are going to realize after losing a bit of money that if they aren't that great at MTTs in general the reentry ones will be worse for them. These tournaments give the pros more value because if they take a beat oh well the pro reenters in ones they feel are worth it then can exploit the recs in the later stages because they have a better skill set adjusting as the tournament goes on.