Funny that we seem to be going in circles.
The web started as a bunch of individuals running their own servers. Then things got professionalized, and we got the mostly benevolent, for-pay corporate services. Now that your data is more valuable than whatever meager subscription fee you're not going to pay for anyway, we're back to trusting the randos.
The plummeting server/software costs help, but it would be impossible without volunteer labor.
It behooves us to support the randos.