I’ll let you in on an extremely poorly kept secret: maximizing profit was the strategy from 2014 on, which is why they kept releasing material slowly. I forget which interview but Chris Perkins flat out said they were intentionally releasing material slowly because they found it performed better that way. They’ve slowly upped the release rate every couple years while likely carefully watching how the books sell to make sure they’re still making whatever profit margin they want from a book I’d guess. Good, bad, or indifferent 5e has been all about carefully maximizing profit basically since day 1.
(Goes without saying they’re obviously also watching other factors like customer satisfaction surveys to make sure the game stays healthy. Someone will read what I wrote above and think I’m saying they only care about profits and while I’m sure there are execs that are short sighted and only care about that, I don’t think the design team making the products are laser focused on squeezing revenue out of the game.)