If you can't beat them, join them, and let bygones be bygones.
"Adopting Chromium as the default rendering engine for Windows 10 will end Microsoft’s hostility towards Chrome. Microsoft has regularly pushed notifications to Windows 10 users to attempt to convince them not to use Chrome, and Microsoft pulled Google’s Chrome installer from the Windows Store, because it violated store policies. Those policies restrict rival store browsers to using Microsoft’s own Edge rendering engine."
I doubt that M$ and Google will be best chums on the whole, though.
Not sure where the info about Chrome not allowing ad blockers came from, for they can found and installed from the Chrome web store, which I have done. Google recently created their own ad blocker for Chrome.