I've spent some time looking to see if it would be possible to spin up a POWER based VM in the cloud (just out of curiosity really). While it seems possible in theory in the IBM Cloud, it seems IBM themselves is only interested in offering this to their enterprise customers moving to the cloud, focusing it on getting people to move IBM's AIX/iSeries lock-in to the cloud. When looking at it before, I was not able to spin up a POWER VM from a regular IBM Cloud account at least.
There might be a bit more interest in POWER if it wasn't so damn inaccessible but it really is. If the easiest way to get into POWER is paying thousands of dollars to a company retrofitting IBM's decidedly non-desktop hardware into desktop hardware (talking about Raptor CS), your architecture is doomed to wait for all your enterprise customers to move to amd64 commodity hardware. Maybe that is IBM's goal even, I don't know.