If the xbox helix has steam how would xbox generate profits?

There are rumors of the subsequent Xbox being an open supply "console". So apps like steam will be added to it. Let’s imagine 50% of gamers purchase 1st and third celebration video games on steam. How would Microsoft make any cash from the 30% minimize charges? In truth they are going to lose much more cash as a result of steam objectively has higher gross sales and offers than any storefront so extra ppl will probably use that to purchase video games.