It's really jarring to still be pinning this on Microsoft, when Google and Apple have been doing the same for free, for years, in iOS, Android and ChromeOS.
If there's any pinning needing to be done it would be on lax antitrust laws or enforcement in the U.S. In the E.U., all of these companies consistently get slapped on the wrist about all of these things, but there's only so much the E.U. can do, if these companies get a safe haven in the U.S. and if the E.U. wants to continue to trade with the U.S. relatively freely. The U.S. is taking a stance that it benefits them more to be the domicile of evil monopolistic global megacorps than to police the necessary preconditions for the existence of free markets (which would imply that other nations could compete more freely with the U.S.) The E.U. has no such conflict of interests, so it's easy for them to take the "moral" high ground (although it's not moral to be precise; more like an appeal to free market values, which, they themselves, are also happy to violate on a case-by-case basis pretty much as it suits them).