How about crowdfunding and open sourcing the ISA?
Post RISC-V it will be difficult to find traction
without publishing the ISA.
The real value is not the textual ISA, but rather
the microarchitecture, which one would think is
protected by patents.
The industry is long past the stage when organic
growth was possible. To be successful the Mill
will either have to find one killer app, or to
support a broad application portfolio.