@Lorne Kates said:
First, there is 0 incentive for an online poker house to rig the deals. They get their fees (entry fee, per hand rake, per hour table time fee, whatever), win, lose or draw. They will earn nothing more from rigging the hands, and stand to lose everything if they are caught.
You don't seem to understand how it actually works. The rake in an online poker room depends on the size of the pot. The bigger the pots the more money the casino makes. So if they deal someone pocket Aces and another player pocket kings in the same hand more frequently than normal they will make more money. Or if they wait until the river to put the pivotal card on the board giving more betting opportunties they make more money. Or if they cause more split pots where both players lose money because they both get back their bets minus the rake the casino makes more money. I am not saying any of the big sites do rig things, but to say there is no incentive ignores some basic math and poker rules.