What you have to understand, these are all the same people.
Dont high profile designers have strong anticompetes?
e.g. Jim Keller. CPU engineer
1982 - 1998, DEC Alpha processors (loved them) 1998 - 1999, AMD Athlon 1999 - 2004, MIPS 2008 - 2012, Apple A4/A5 2012 - 2015, AMD Ryzen/Zen 2016 - 2018, Tesla 2018 - 2020, Intel
California doesn't allow noncompete clauses. It's why Silicon Valley exists in the first place.