@Gargron it's absolutely true that VC will want an exit. However that can come through an IPO, which is essentially crowdfunding.
If you are serious about crowdfunding, consider opening an investment round for all.
I also agree on the need for sustainable business. But Mastodon doesn't have that, at least one that would give significant resources for growth. Donationware isn't that, and most instances are run out of people's own pockets.