Rigging an online poker room would be way way way too risky for the company. There are statistical analysis like confidence intervals that someone with a lot of time on their hands could preform and all but prove that its rigged, if it actually was. Get a ton of people to donate millions of hand histories, if an 80% pre flop favorite only wins 70% of the time, you can make a statement like "If this was NOT rigged, that would only happen .000001% of the time." Essentially proving the riggedness. Theres no point for paradise or anyone else to risk it, they are making a killing as it is.
