Well technically there’s already a few out there, most notably Alibaba (found in DC-ROMA laptop), but these are slow relative to what’s available in other architectures and are there mostly for developers to test the software and make sure it’s ready for RISC-V. But nothing is stopping from buying one and daily driving it, it would just probably be a horrible experience.
The support situation is so bad that both GCC and LLVM have extensive for RISC-V.