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if the OP is a gambler who has been playing in big casinos for years. Of course, he will know what the players want. like his experience when playing in one or several casinos.
it is a good capital for setting up his business. due to experience as a player will help him in developing his business according to market demand. as well as the marketing strategy that will be carried out.
It's true that if he is an experienced gambler he would know much about the business. However, being a player doesn't make you entirely understand the business and what most players want features and functionalities the casino should have. That is why gathering information from the community does help a lot for owners/developers to decide what to add and what to not include in their system.