How can they influence the economy in the country? If the house always wins then there will actually be less money that goes into the local economy and the casino benefits but how does the economy benefit from that?
The countries where gambling is the major income source might be influenced but most countries are not that so they wont bother.
The casinos make earning opportunities for those working with the casino, the employees, investors and owners. The players will be spending their money for getting literally nothing back.
Now if gambling moves to more online/virtual reality things, the offline casinos will take some hit unless they empower the hybrid version of the casino.