Lock in as well. Was at a company that invented a visual programming tool and forced development to use it. Several flat out refused. We all went on with our

Lock in as well. Was at a company that invented a visual programming tool and forced development to use it. Several flat out refused. We all went on with our careers. The people that used the proprietary system still work there, not then a decade later. They hated the tool then. But they have no marketable skills set at this point.