One thing has always bothered me about the original thread ... I just couldn't identify what that 'thing' was. I think I have ...

One of the keystones to the GC's attitude seems to be "if the sub won't behave, he'll never see any more work from me?"

The logic / merits of that argument aside .... I have NEVER received any future business from anyone who has dangled the "future business" carrot. That promise seems to be empty cant, used solely for some immediate advantage. Usually it's in the form of 'give me a good price today, and I'll bring you a lot more work.' There have been plenty of times, though, that there have been similar variations.

This has even been the case where the job is going smoothly, there are no issues, and the promise comes 'out of thin air.' The work never materializes.