Huge portions of the compute they are using is also directly doing inference for Microsoft products, so that's another dimension to all of this.
You also have to remember that ultimately Microsoft had to sign an operating agreement that states that the primary duty of the for-profit is the mission and charter of the non-profit and that all other things are secondary to that.
Not that any of that makes Satya happy, but it does severely limit his options outside of cutting off his nose to spite his face. I think the primary outcome is in significantly reducing the chances Microsoft continues to invest.
I'm just giving an example of where they do have leverage if they want to use it despite the cost.