Who knows. There's a huge financial motivation to move to RISC-V to save on energy and heat. Cooling is one of the biggest expenses of a data center.
AFAIK x86 is still dominating the data centers. There's a bit of ARM going on but wouldn't it make more sense to switch straight to RISC-V?
Who knows how many decades it will take for e.g. Debian to support RISC-V properly.