I think it will need centralize intervention until the block size can be set in stone and forgotten.
You tendency to confuse Bitcoin with free market is largely misguided.
To quote davout:
Do you think there should be an "artificial, centrally planned limit" on the amount of wood people are allowed to chop from the rainforest?
Do you think there should be an "artificial, centrally planned limit" on the amount of endangered species' specimens one is allowed to kill?
Are you saying we need an "artificial, centrally planned limit" to keep Bitcoin decentralized?