I'd think the threat from RISC-V is lower than that from OpenPOWER, but then again the threat from both combined is more significant than from either one alone.
Not sure why El Reg keeps only highlighting RISC-V as the One True ARM/x86 Killer, it's not the only open ISA out there, and in point of fact it's currently the one with the least amount of usable open-friendly silicon available for purchase, and also the one where most of the existing open source software simply won't run. And with those trends not changing very quickly, if at all, it's not currently a serious threat to all but the smallest ARM designs in reality.
Biting the hand that feeds IT
