Are all “interesting people” so cash strapped that they wouldn’t be able to afford a $10/year membership?
Anyway, what if I told you that my instance provides “group-based” billing? You could, e.g, get a 10-account package for $5/month and give access to 9 other people there.
I would still try to come up with some form of vouch or sponsorship-based system, where the paying members get to approve non-paying members if they have a backing sponsor.
donate to keep a door open for all.
Donation-based instances are not sustainable. You can see that already with Mastodon. They used to be able to get enough funds to even support upstream projects, now they are invite-only. Turns out that “keeping the door open for all” makes the operating costs rise faster than the revenue from donations.