All these things are necessary for a casino to place their site on a level where they would not have to spend much funds most time when they are just starting. There are some things that needed to be considered so that the casino do not spend more than they have in their portfolio. Marketing is one important thing that needed to be put into consideration to expand and spread the word to people that are looking for a Casino to use and bet to relief themselves from the urge of making money through gambling.
Some casinos that have just been built and released on the gambling industry market will always minimize the budget they will spend because they cannot yet get income, this is why some new casinos have promotional methods and so on that are not attractive enough.
Except for casinos which may have several investors when they are founded it will be much different, they will have marketing and also various promotions which are very tempting, even though sometimes they have many unreasonable requirements but many gamblers are interested.
It all depends on the owner of the casino and who is behind the casino.
I saw before that there were lots of new casinos popping up out there and they were offering various bonuses to all their new customers, I saw there were various promotions and whether they were profitable or not it was clear that they were offering them.