Both in gambling and business people risk with money. Bad luck or wrong move in gambling means you will never see your money again. In business there are methods to get back money spend on wrong investment, from unfair intermediary, from debtors if you go to court. In business being without money does not mean you are broke and business is bankrupt. Even having debt in business does not mean you are finished.
You are right mate, risk and procedures in business is not same as in gambling, people could manage their business very well but when it comes to gambling, they could lose all their business money to it, similarly to responsible gamblers that might not be able to manage a business with that same risk and method that they use to further their gambling activities.