All of the RISC-V software ecosystem exists, and you can buy high performance out-of-order RISC-V implementations now from SiFive, as well as low power implementations that are very competitive with low power ARM.

The only problem right now is that high performance in the RISC-V world is about 4-5 generations behind ARM, so the fastest SoCs you can buy have cores that are roughly equivalent to a Cortex A73. SiFive is catching up a little each generation but they are a way off yet.