One possible theory :
If HufflePuff is Stunna, it is more easy to understand all the story ... isn't it ? He play with bitcoin and if he has lost (he will not lose anything, because the btc is "yours").
I don't think someone know the cold address of primedice, so we have not any possible and valid information. Ours are only possible theory, finally I want to ask if I may : why isn't it possible to invest on primedice?
It seems your theory&conspiracy is reasonable, this kind of marketing made primedice famous, and attracts more customers, because the new customers would think legit in betting on Primedice.
Why we can't invest on PD like just-dice or other dice sites? It's a good question, I guess Stunna is rich enough. So he can be the HOUSE. That't why he doesn't need investors. And he can get all the profits. Dooglus is using the other way to manage his dice site, investors make money, he can also get the profits, it's win-win situation.