Oh, I never suggested the whole planet use soley the Bitcoin protocol. I should have made that clear.
As an example:
Let's talk about the web. They have "standard" protocols like HTTP for a reason. Not everyone needs to create their own protocol. That's how the internet works to the benefit of everyone.
If all of a sudden new web standards say we now have "653" web protocols, believe me visiting websites would be a lot weirder. Sometimes generally accepted standards work really well on the internet. We could consider some of these in the design of cryptocurrency projects too.
RE: One thing Satoshi Nakamoto underestimated was greed. We underestimate it too. Let's correct our mistake.