You're ignoring all of the
other things that have happened with the internet in order to specifically attack this nebulous idea of "corporations".
You can make exactly the same argument about the influx of new users (Eternal September memes, "then came all of the normies with their friends, all competing to get the most upvotes on their Reddit posts), the bloating of the web ("then came all of the hipster developers"), sexual content, or any one of another half-dozen side-effects of the internet becoming massively more popular than it was in 1990.
If anything, the web has more independent content on it than it did a few decades ago - you just don't see it because you frequent a small number of platforms, you're not investing effort looking for it, and Google's search results are incredibly gamed.
I have hundreds of individual blogs that I've bookmarked through link-following and reading Hacker News frequently, without even trying to amass a collection. If you were to actually spend effort tracking down independent content, then maybe you'd actually find some.
Moreover, the internet never became "less human", because it was never human in the first place. It was a network of computers, a technology - not your neighborhood, or anything resembling a community, because technologies are not communities. Your complaint is basically saying that the median website is more focused on profit than it was a few decades ago - which, aside from the fact that there's no evidence to back it up, is a meaningless complaint equivalent to the Eternal September ones. Sure, even if the median website is more profit-focused - so what? There still far, far more useful information, and interesting people to meet, than there were decades ago - and the internet is available to everyone, as opposed to just those with dial-up (or whatever).