By all means, make non-competes largely unenforceable like they are in California (where they aren't actually "banned"). But be aware that even in states that do or did allow for enforcement of non-competes (like Massachusetts that finally significantly weakened them), there has always been a lot of job mobility and even competitors started by people leaving a prior employer. Non-competes/not-non-competes are not some binary thing that either lets you make off with all of a company's IP or that leaves you chained to a desk for the rest of your career. There are certainly stories of serious non-compete abuse (in my view) and I even know of a couple second hand, but people do routinely move among competitors in states other than California.

I don't live in California and I've only once had to sign a non-compete and it was narrowly scoped and mostly irrelevant.