iirc last check it was about 50/50 people vs bots. The problem is people running bot farms or AI generated channels know exactly how to tailor content to the various algorithms used by big social media companies and thus actual human content is actively burried.
Not really, corpos take over any centralized effort. Look at wikipedia, funded by donations and has enough saved up to run for the next century, now they spend all that donation money on thinking up ways to ask for even more donations.