OpenPOWER remains a massive niche - as in, it's big, but it's still a niche - because nobody (in the sense of "just anybody", ie the long tail) can really get their hands on it. It's nontrivially difficult to maintain access to IBM POWER8 kit, and the Talos is also certainly way beyond what I could personally afford from a "directionless tinkering/learning" standpoint.
If I understand this article correctly, cloud-native means there's not likely to be a Talos equivalent for sale, and it's all remote access only.
Also, OpenPOWER is, like, an entire CPU, with a design is extremely old and can be expected to stay around for a long time, and even with that sort of centralizable focus opportunity it's still a niche.
I get the impression this is suggesting the creation of custom components with somewhat shorter design lifecycles - years, certainly, but not multiples of decades, and maybe only months for individual hardware revisions.
If this really wants to attract developers from outside of the immediate focus of the relevant industries... how are the discoverability and accessibility equations going to be solved?
Of course, the more potential cooks you attract to the kitchen the more overheads you have to deal with, but I wonder if is a necessary element to maintain interest and familiarity with what would apparently prefer to be a fast-changing environment.