Actually, I think this is supposed to be a help in advertising outlay.
See, Poker as well as Bingo has some “time delay” built in.
Most players play for free for a while to get a feel for it and then start paying.
I have been complaining for some time that I prefer to see a combination CPA/% in Poker and Bingo to offset the initial advertising outlay.
The player I buy today will not likely play today but will play lateron.
Clawback is I suppose a version of this combination, but a complicated one.
Maybe a better idea to keep it simple.