I mean, if they are making money off the rake, they should be making money, so if I don't deposit money, it shouldn't be relevant to the Pokersite, as I am paying the same amount of rake. However, they probably do want deposits, as they probably have a lot of elements of that, a Ponzii scheme, within there business model, which leverages the fact they have all this capital, that they technically have to pay back out, but may or may not in reality. So it's like, I have 100million dollars of deposits, and probably can spend 90 million of that, and still have enough to pay everyone out, as everyone probably isn't gonna request to be paid out at the same time, but in reality, the money is gone lol.
However, I don't see how free rolls directly translate into deposits.