Aren't the countries that would care about the legalities and patents the same countries that would be sanctioning them? I don't know who will adopt risc-v for high performance. Nvidia maybe? Intel-lattice-altera-intelgpu. Amd-ati-xilinx. Nvidia wanted to be nvidia-arm but as that didn't work, maybe risc-v? No big fpga players for them to pick up though.
