There’s an important element to monetization in the Fediverse that people are not tackling:

Money movement is tracked. And we are here mostly to avoid tracking.

I have this account tied to my more-or-less-real persona, but I have 12 more accounts in the Fediverse not tied to it. If setting up something like a subscription service would mean Fediverse has to implement eg.: KYC laws, or attach accounts to real person banking info, then I’m barred from participating in this real money economy in 11/12ths of the Fediverse even if I liked the content.