Mandate mobile 'freemium' games display the gambling problem helpline somewhere in app.

I feel like freemium games are becoming more and more like gambling everyday and highly rely on a small amount of people spending large amounts of money to make a profit. Due to that high possibility for spending that may get out of control I think all these games should feature the National Council on Problem Gambling helpline just like commercials for Casinos and the Lottery do. Best would be on the transaction page itself.