The question I am posing to myself, but also to all you readers may seem simple, some may even consider it as a rhetorical one, assuming that the answer is obvious. Nevertheless, I will dare to claim that, just like most poker problems, this one's correct answer is “it depends”.
In a cash game, depending on the cap, the rake can be computed based on a sufficient sample. At the stakes where most people play the rake is usually around 5% of each pot that is played if the flop is seen and there is a cap that depends on the poker room, the stakes, the number of players at the table etc. The final percentage of money raked on average may drop to around 4% of the pot if the hand isn't over preflop.
Many of you may quickly claim that the tournament rake is around 9% for most of the tournaments that the majority of players take part in, unless we're talking about a heads-up tournament, where it is usually 4,76%. On my turn, playing the devil's advocate role I will then ask you: is the rake a player pays the same, either he plays a 2 minute blind interval turbo, or a 10' blind interval regular tournament? The poker room earns the same money at either circumstance, but what will its hourly profit be at each of them? How many hands has a player bought with the same amount of rake at the super turbo tournament as opposed to the normal one?
So, the answer isn't that simple as it may seem. Let's take an example of real numbers to make the problem more clear. Consider a winner-take-all Sit'n'Go tournament between 10 players with a $10+$1 buy-in. Let us also suppose that each player takes 1000 chips at the beginning of the tournament. The poker room will earn $10 from all players' fees added together and will reward the winner with a $100 prize. But actually, this game is a cash game where each player paid $11 to receive chips worth $10, that is each chip he bought is worth $0,01. This particular cash game has special rules. Rake has been prepaid by the players when the bought their chips, blinds increase as time passes and nobody can stand up with his chips to cash them out until one of them wins all the chips of the table. Furthermore, no player can rebuy chips during the game. Let us know turn this tournament to a more imaginary one assuming it starts with a blind level of 1000 antes and 5000/10000 blinds and we'll see all players go all-in in the dark at the very first hand. And if we have one single winner at this first hand, then all the players will have indeed paid 9% rake ($10) out of a $110 pot, in contrast to a normal cash game where they would have paid around 4%-5% of the pot. This particular tournament rake is indeed an expensive one. But if we collect some statistical data, we'll see that in such a winner-take-all turbo tournament that lasts around 70 hands on average, the total sum of pots when the flop was seen will be around 40000 chips (which is equivalent to $400) and thus the $10 that the players will have paid to play all these hands will certainly be less than the 2.5% of the “money” that built these pots.
Imagine now how many more hands the players of a MTT play until its end, especially if it is about a non-turbo one. Also take into consideration that as the blinds increase, the “money” that enters the pots is even much more than the money paid as tournament entries.
To be continued...