Grey area to be honest as WGT encourages gifting equipment etc. You end up with creative payment systems more akin to the mafia where tournament "prizes" are 10 sleeves of balls but entry is very carefully restricted...
WGT have somehow created an ingame credit laundering system.
I mean I lost a Blitz game for 500C tonight. Does that mean WGT are looking at my account wondering why I'm "giving" credits to another player?