I'm inclined to support well-compensated non-competes, eg "you can't work in this industry for 1 year, but we'll pay you 100% of your salary for that year." That would allow non-competes for people where it really matters to a company (eg where they're willing to throw a lot of money after it), but ban it the rest of the time.
It's still harmful, but you're at least able to get compensated for the harm.
It's still harmful, but you're at least able to get compensated for the harm.