In the UK every bookmaker will have an app, and there are plenty of real-money casino and bingo apps available.
Of course, the difference here, is that the UK's gambling companies operate in a highly regulated environment. You can put in place deposit limits instantly that then take a week or more to lift, you can self-exclude (ban yourself from the bookmaker), and these are the measures the firms have put in themselves, the regulator is there to basically make sure they're following consistent rules and treating players fairly.
Money laundering regulations, appropriate licensing, etc. also all add up. The general view is that people should be free to gamble, but also have a regulatory framework to remove criminal elements and ensure players are treated fairly. It helps that the government gets to tax proceeds as well - an issue causing real headaches as they've become as addicted to the in-store FOBTs income as much as bookmaker shareholders have.
I've thought for a while that there was going to come a time when spending caps were likely going to be needed for in-game assets. But then, where do you draw the line? You could easily argue that webcam sites are potentially as addictive, exploitative and potentially have the same game behaviour that is so dangerous here.