Any new casino can still survive and become big, but it requires money. Some casinos may have good developers, good website but not able to market and promote their casino, that is because the casino do not have enough money for it. Marketing is very important, it can help a casino to become big. Others things are excellent customer care, many and good option for deposit and withdrawal, and having many good promotional offers after being able to advertise to make people know about them.
new casino owners must at least have expertise and experience in terms of gambling business, that's the most important.
if the casino owner already has that experience the casino owner doesn't have to worry about the funds to be used to market or promote his site. because if people who already have experience can certainly plan everything from profits to losses so that casino owners can get funds to develop from investors.
so there is no need to be confused about the money that will be used to promote the gambling site.