As for the longer term, this brings up an important question: why use blockchain
at all?
Blockchain is slow and expensive to transact in
on purpose because of proof-of-work and decentralization.
It's because it is transparent and can't be altered. That's the reason why blockchain has a better integrity if you're for that and projects that are into it aren't just for crypto but also for main use cases like voting.
No cryptocurrency will ever come even close to scaling to the billions of transactions each day by people worldwide.
You bet? many of those billion of transactions aren't that much I guess so if it's about quantity over quality, you have the point in there.