I'm all in for RISC-V, but ARM Holdings is British (and owned by the Japanese SoftBank group). ASML is in the The Netherlands. And there are some European ARM CPU vendors (NXP, ST Microelectronics, etc.). So Europe could also standardize on ARM without sovereignty issues?
I think we should definitely invest in RISC-V, open is preferable, especially in a continent-wide initiative. I’m just contesting that the US could unilaterally sabotage ARM use in Europe.