Online Casinos. I can assure you that the huge ones are not fixed. They are regularly checked by auditing bodies. Do you not think Government has the same concerns you do? Online casinos record every hand and every play on every game, and these results are checked to see their payout. Casino games 'themselves' are rigged towards the house. They do NOT need the risk of making their games biased in order to make money. Online casinos do not cost much to run compared with a real casino, and so therefore their profit margins will be excellant using the exact games and odd that their real life brothers use.
Usually games 'average payout' is above 90% by the way. You won't find many games under that at all. The reason why the house always 'seems' to win so much is the the fact that if you're £100 up, you can always still loose it. If you go below, 0, you can't get it back. So whereas in a fair game you could be down sometimes, up other times but come out alright. In a casino you would've been wiped out as soon as you went into the minuses.
Just thought I'd defend them for a sec.