doing business is flat out wrong!!!! you don't dump someone who is investing in you. it's nice to have the financial support if you need it, why screw that arrangement up?
does it happen? of course, as long as people are trying to make a living playing pool for a living it will continue, they get desperate and will do desperate things to make money. still wrong though and will bite them in the butt at some point.
I don't get staked hardly ever by my choice, but I would never ever do business!!! I can proudly say that, but I always have worked too.