That's very hard to police and prove. It's easier if you pay them to be unemployed for long enough for their knowledge to be less valuable. This is very common

That's very hard to police and prove. It's easier if you pay them to be unemployed for long enough for their knowledge to be less valuable. This is very common with businesses like hedge funds. But I agree non-compete should be narrowly allowed and only in situations like this that are more equitable.