It really depends a lot on how the high roller policy works. Most that 'ring fence' the player are ok for affiliates. The problem is more that places like Wagershare will ring-fence a player, not give you any data, and if you don't follow up with them - that player will not be returned to your account.
I have very little problems with a high roller clause so long as there are reports sufficient enough to *watch* the player and see all of the appropriate information.
It depends on your point of view. Personally I can totally see it from the casino's angle, so I'm happy to accept it.
Example:
Player deposits $100 and wins $10,000 in June - but doesn't cash-out. The affiliate gets nothing.
Then in July, the player loses it all back to the casino. The affiliate gets say 30% = $3,000. But the casino has made $0 from that player.
So the casino is $3,000 out of pocket even though the player broke even.
Seems fair enough to me for the casino to "ring fence" that player.