Not the point. The vast majority of masternodes are hosted on Amazon servers and obviously by default is centralizing. Not to mention the reason people use the cloud is because of ease of use, they don't want to have to actually buy hardware such as a Raspberry pi to host a node(Hence why the vast majority of masternodes are hosted on Amazon).
We all live on Planet Earth. Everything about it is centralized around the sun. We are doomed.
Seriously now, Amazon has dozens of farms all over the globe, they are both infra-structurally and juridically independant from each other. Even if they were able to pull the plug on the entire MN hosts, within minutes you can fire up another node anywhere else, without hazard to yourself, your coins, the Dash network's anonymity or functionality.
It is
not at all the same analogy as mining pools.