What he's arguing is that web3 solves this problem by aligning incentives for creators and maintainers around the same token system.
This will probably mean that more OSS code gets written, but - as with the open web - financial incentives will invite bad actors to game the system and the signal to noise ratio in OSS contributions will decrease.
A good case study in this is what happened when Steam tried to add monetization to Skyrim mods[1].
[1] https://steamcommunity.com/games/SteamWorkshop/announcements...
Yes, this is one of the many hard problems.
I would be 100% behind MA if he used his influence, wealth and power to fund solving these hard problems.
Unfortunately, his and most of current funds are building Managed Blockchains that's just needless complexity where federated databases would have sufficed and been far more efficient (perf., cost, complexity)
That said, Decentralization is the future and will happen with or without him. Unfortunately he's going down in history as one of those who slowed down progress to make monetary gains.