You would pay them? Paying Microsoft to not put garbage in your operating system is like paying the mafia to not break your shop windows.
Microsoft is giving away Windows. Remember that not that long ago you had to pay €$200+ for an OS.
Official MS pricing: https://www.microsoft.com/en-us/store/b/windows?activetab=pi...
I'm guessing they're not going to drop those fees, so whatever ad or product-placement revenue comes in is probably on top of that?