I'll go one step further in saying that it's an inevitable future. The likelihood that one cloud will have the best price, best components, best qualities for every use-case is just not very likely. People will trade complexity for price eventually, once the price gets big enough.
The good news is, kubernetes is fast appearing to be the winner of the race for a multi-cloud substrate. The bad news is, kubernetes is complex (IMO necessarily so), so it takes quite a bit of investment and mindful practice to learn.
I just thought of it, but you know what would be nice, if people started posting their AWS/cloud provider costs.