Also, agreed about the use case - sometimes I get the feeling that quantum computing is a problem looking for a solution (but I am sure that must not be the case). That said, I think things are partially that way because quantum computing is just such a different paradigm, so to truly take advantage of it takes a pivot in thinking, but that great dividends may be possible as a result.
My thought is, it's kind of like how we learned about what FPGAs could do. Different paradigm, incredible opportunity.
* Decentralized as a part of early development
* Centralized for ease of early deployment
* Decentralized once it becomes simple / commodity enough that everyone can just have one
* Recentralized once it's cheaper to run them all centrally again
And then you only break back out once the thing you're doing fundamentally changes for some reason.