At this point I'd say no. Most people are playing the game more or less single player and Jagex continues to get more money hungry. I wouldn't be surprised if OSRS gets micro-transactions at some point.
Personally, I've stopped playing and cancelled following these changes ... in no small part because as a part time RS3 player, I feel like my relationship with Jagex has gotten to the point of being abusive (I say something, they never listen).
I'm conflicted: while I can pay these prices without much issue, it feels ridiculous that we have to. On top of not grandfathering 12 month membership costs - your most loyal members - I'm pretty pissed.