Inertia will carry them pretty far, and I'm sure they'll find some way to increase profits — most likely by changing the rules to the point where the site and community is unrecognizable. It will take a while before anyone really notices, and many people probably never will. Reddit will continue boiling the frog indefinitely in search of profits, the same way most social media corps do. Today's YouTube is nothing like what it was when it became popular. Same with Facebook, same with Twitter.
Reddit just needs to pivot before they fall. They probably are in good position to do so, tbh.
There's more money in passive, less-savvy users. The ones who don't use ad blockers, don't use third-party apps, and just consume the feed.
I shouldn't be surprised that Reddit is actively alienating people like me, because people like me do not bring them ad revenue. We DO bring them users, in theory, because we contribute to conversations and make original posts — you know, the things people go to Reddit too see — but what does that really mean for the bottom line? Possibly nothing. There's no shortage of posts on Reddit, many of which never see the light of day because they never get the upvotes. If the top contributors leave, it will just create more room at the top. The feed will remain full, and the subjective quality of that feed probably won't affect the bottom line very much.