Is the ultimate game for the West to ban export of chipsets to Russia? I mean, the West controls IP for x86 (PC) + ARM (Mobile) + PowerPC/MIPS (Network gear), and Russia cannot probably run their infrastructure on RISC-V alone, and their Elbrus ISA probably didn't take off?

The West can ban Chinese companies and dependent states (S.Korea, Vietnam, Malaysia, Taiwan) from exporting chipsets and devices containing them to Russia.

It'd be an interesting thing to see, how Russia would try to go around this. They will, but it will still be a big problem.