Because if you don't have an Open ISA you can't have an Open chip. That it, if you ever want to use open source hardware, you need an open source ISA. The RISC

Because if you don't have an Open ISA you can't have an Open chip. That it, if you ever want to use open source hardware, you need an open source ISA. The RISC-V ISA with the Compressed extension is very competitive and often better pretty much anything else. RISC-V also has an innovative modular structure that allows it to be optimally used in many different industries while sharing a lot of code. The RISC-V Vector extension is really good and innovative. And so are some of the other extension.