Honestly, I wouldn't put it behind IBM to turn it around with POWER revival. They'd been doing some cool stuff recently with their NorthPole accelerator[1], and using 12nm process while at it, indicating there's much room for improvement. It could eventually become a relatively open, if not super affordable platform. There's precedent with OpenPOWER! And not to mention RISC-V, of course, championed by Jim Keller et al (Tenstorrent) but it's yet to blossom, all the while pppc64el is already there where it matters.

I say, diversity rules!

[1]: https://research.ibm.com/blog/northpole-llm-inference-result...