The casino business is a profitable online business if it can operate wisely. But, if you care too much about bonus things and expense a lot of money there, the margin will drop drastically. This is why Giant casinos like Stake were forced to reduce the bonus. It's excellent that Duelbits has a lot of good promotions, and they did not remove any feature yet while others are trying to increase their profit margin.
They have to make strategies according to their marketing and promotional budget so they cut sometimes these bonus and reduce giveaways also which is the case with most of casinos.But the thing is when you are competing in this market you can't satisfy all the players as they have different demands and casino can't operate on all of them but makes wise moves according to whole demand and their plans.There are many such reviews of which they cannot do anything.