Completely agree
Somewhere along the line trust has to come into consideration.
The only way possibly protecting yourself against that, is to offer a long term plan, ie, if we get to this state, Im prepared to give you a percentage in the company - meaning better to work together than against eachother.
My friends a hairdresser, tied into a contract many years ago, that she could not operate within a certain mileage of the shop, if she were to start on her own.
Its just business really, you work for somebody else, and you end up thinking "hang on I can do this myself" it happens in most companies, I ended up going alone because I wasnt going to make 100s of sales calls, for somebody else when I could do it myself. However mine is nationally dominated, as oppose to area.
Common cause where everybody benefits, rather than "I can do this for myself"
Hope that helps