Power is still a failure.
Power never managed to escape the stink of single-source. Yes, that's still a major issue - just look at all the teeth-gnashing that results from depending too much on Intel.
Has Power ever suffered from anything but "why bother"? Are there actual OS/software problems in the existing environment that cause problems? Buying RH might well fix them, but afaik, Power is unexceptional as just another one of the gazzilion arches that Linux supports.