Proof-of-Stake is indeed a good thing, and a worthy focus of the article. From the article we read " the long-term hope is that apps built from them will eventually make Ethereum the ultimate cloud-computing platform. " Ethereum does not claim to be a computing platform in the same way that AWS is; it's for low-complexity business logic only. I think it's misleading to use "ultimate cloud-computing platform" to descr…
Ethereum claims to be the "World Computer" that lets you build "Unstoppable Applications". If that doesn't sound like an AWS competitor then I don't know.
Those are multi billion dollar business with billion dollar requirements in infrastructure investment on a yearly basis. Not going to happen.