Lunch can in fact be free if you skip it. I feel market forces will almost always prefer a centralized (I.e., marginally cheaper) solution so long as it is robust enough. I would have to imagine an entire economic and cultural shift to imagine S3 being usurped by a decentralized solution.
Sometimes centralization is a benefit because it gives you someone to invoice/sue if it breaks.
The current internet, with all its shortcomings, has created an impossible standard for alternative solutions that would be more secure / free to reach.
The problem is that the "freer" alternatives based on blockchains rely on network effects. In other words, they are incompatible with the freedom to choose something else.
A freer alternative that does not rely on blockchains would not have this problem.
Sometimes centralization is a benefit because it gives you someone to invoice/sue if it breaks.