It should come as no surprise that, as I've mentioned a few times, I'm no fan of Cloud. My reasoning derives mostly from the notion of ownership and control. It's your data and processes; you are responsible for the core of what you're doing. Outsourcing such is foolish.
I read this today. What's amusing is that this problem, of using that which isn't yours, has existed since at least OS/VS1 and Multics; yet the Cloud Kiddies think they've discovered a new and interesting problem. There is simply no substitute for knowing what resources you need, and acquiring them.
Further, the Cloud approach, with anonymous resources, is not conducive to resource specific applications, such as those optimized for BCNF data on SSD.
There ain't no such thing as a free lunch.