If I am not wrong, I have seen some content in this forum where every time participant has to pay fees and they had to pay it before they join. The organizer make sure they receive the funds for the prize pool. Even the sponsors send the funds to the organizer most of the time.
Well, now that you mention it, at my local board we did
a price prediction contest and all 6 sponsors put up the money before it went ahead. It wasn't a bet between the 6 of us, it was open to other people, with some rules like having written at least 1 post in the local section that year.
But what if Rollbit or Sportsbet denies to pay the promised prize? Wouldn't you guys leave them a tag because they were suppose to pay the prize. Isn't it same like a person promised he will pay if I win, now I won, but he said he won't pay me. I guess it's same. The difference is, the corrent contest isn't ended yet.
Well I suppose there would be debate as now, because of the previous positive reputation of those houses, but I'm sure if it was a lesser known house or the forumer in question one with a lesser previous reputation he would already have some red in his profile.