Like most ISA's, RISC-V needs it's decades in the R&D oven to get passed certain hurdles.
Everything from design, standards, pre-fabrication, fabrication and manufacturing has to get to a point that makes RISC-V comparable to ARM or even x86.
I think my metric is having hardware available to the consumer that can run heavy productivity suites, like NLE's and real-time media processing in general. Once you get there, albeit through accelerators and subroutines, that's when RISC-V has arrived.