> And you sure as hell don't have primadonna developers stay in the payroll for long if they start throwing tantrums and personal attacks towards fellow engineers when they are asked to follow the release process or are called out for trying to sneak untested changes in mission-critical components.

You've obviously not been in this industry for very long, about half the places I've been to have had at least one "rockstar developer" that was actually quite mediocre but had the ear of management which thought they were all that and as a result got to do whatever they wanted.