It's still there, the old internet. You just uave a hard time finding it with corporate tools like the modern google.
It definitely doesn't need to be Twitter/Reddit active, but a cozy but empty forum isn't a community so much as a small gathering.
or microbiology if you prefer: bacteria (individual agents in a capitalist system) find a new source of food (the internet). the bacteria evolve to optimize their food collection, irrespective of what is "good" for the ecosystem. the food chain shakes up, the predators become apex, and when they've taken too much, they die off in a cycle.
right now we're at the "taking too much" stage. but I don't think anybody is dying off.