It would be a mistake to not realise that they operate in the same virtual space as profit driven corporations though. They should still be professionally run with proper pr and marketing. Whether that is volunteer led, or alternative funding like Wikipedia or charging corporate clients etc.

Personally, I’d like corporate integration to fund the free part, but with no additional benefit. Just the same access that private users get for free. Otherwise it’s a slippery slope.

Hard to regulate though. How woukd you verify, who would verify? Could be like fair trade products, whereby there is a certifying body. User instances could decide to only federate with corporate instances that are registered with this non profit. They would pay for their access, like Reddit is asking from their apps, except actually reasonable costs. This could be disbursed to large instances with over X amounts of users to fund their computing needs.