I'm not saying that RISC-V is an hobby project, I'm just saying that hardware development is nowhere comparable to software development. You need much more sup

I'm not saying that RISC-V is an hobby project, I'm just saying that hardware development is nowhere comparable to software development. You need much more support and verification while developing hardware then developing software. And while you can reuse the functional design (please note the keyword "functional"), the physical implementation needs to be redone from project to project. ARM, Intel, AMD, Apple and Qualcomm have an army of engineers with all kinds of tools that go through all the steps of hardware design and implementation which you can't do as a side project at home using just your computer.