Suggestions 2, 3, 4 might be doable with a lot of development effort and co-ordination amongst the FLOSS community.
Even people without any coding experience at all can write guides and set up simple webpages to help people understand the fediverse, recommend it to their friends and encourage spreading out on the platform instead of coalescing around the biggest instances.
Suggestions 1 and 5, while noble goals I don’t know how that would be possible at all. People tend to be incentivized to pay for things if they offer value that can’t otherwise be attained. For the former, how do we enforce a multi-billion dollar company to play by the rules of the miniscule federation we are? To many, the answer is to not entertain them in the first place.