The Goldilocks Zone.
Or shall we call it The Goldiblocks Zone?
Most projects will be by successful leaders and enthusiasts, until one of these experiments will hit the perfect combination of factors, and gain world traction.
Think of the crypto industry as AI training, most is pure junk, until a regression is fit.
Grandparent had a good point:
TCP/IP were the right approach, and the internet grew rapidly in a big bang.
Personally, I think The Goldiblocks Zone won't be blockchain at all, it'll be decentralization.
We've seen sites like D.Tube grow 2,000,000% because there is NO pay-to-play scams, you just use it and it just works.
They, and other sites, including the Internet Archive (top 300 in world), use GUN for decentralization. Ethereum makes the mistake in assuming every site needs to operate like a bank, but people hardly use banking websites compared to YouTube or Reddit.
The best way to cut 99% of power out of Ethereum is to just make it a decentralized compute platform, not some pay-to-play blockchain. Then you can really scale up.
As a comparison, for instance, a P2P version of Reddit (notabug.io) can handle 1000X the throughput as Bitcoin on only $99 worth of networking hardware.
The efficiency gains here are economical, but also scalable. Neither PoS or PoW will ever be able to fine-tune for that.