I'm little confused about this talk and comments in here relating to open source in high performance applications (desktop, servers etc).
The RISC-V ISA is open source, I get that. There can also be open source Verilog/VHDL designs available. They are probably good for small low performance IoT applications and old processes.
But there is long way from ISA to silicon in high performance VLSI processor design for a new processes and foundries. Architecture, logic synthesis, timing analysis, floor planning, routing and placement, and ungodly amount of testing .. I don't see anyone spending hundreds of millions of chip design for RISC-V ISA and open sourcing it.
In other words, if you want competitive RISC-V chip, some company must spend hundreds of millions to develop their own RISK-V chip architecture and they will not open source it.