I seem to remember that when AP first took over Gold Air there was a thread on here about it. There were many people from within Platinum House bullishly claiming that they didn't need other brokerages as they had more than enough business themselves to keep the Lear's flying. I expect comments like that may not have helped endear them to brokers either.
It often pays to be nice to people on the way up, as you're likely to meet them again on the way down!