Earlier quoted context omitted.
It's an error to treat the Fediverse as you would treat Twitter, where there is a singular platform in some way external to its users. Fediverse is a mesh network with single-user instances being feasible. If a single node has problems scaling, split it up. If a whole network has problems scaling, add more nodes. Fediverse is not yet at levels where the whole network is congested, either.
And who is supposed to do all of that? Without a central organisation doing resource planning, scaling, and paying for all of that, this is never going to run smoothly. 99.99% of users have no interest in running their own instance. Even groups or organisation will eventually get to the point where running and scaling their instance becomes a full-time job. But without any way of monetising that work, or finding spon…
With respect to monetisation, I hope the fediverse will provide a live sandbox to try all kinds of experiments at eye level: Free, ad-supported, fees, one-time fees, pay-per-toot, pay-per-followed-instance, whatever. Multiply by private, non-profit, and for-profit approaches.