"oncentrate on being a cloud company where the real money is..."
Azure has been successful only because it was the only good path for MS developers and customers - as it supports the Windows ecosystem better than other clouds.
Look at IBM or Oracle - their clouds are not successful because they have no competitive advantage over AWS.
If MS renounces to its competitive advantage with Windows and its software - it will just become "another cloud" - and customers could easily switch to other providers, if they find the same software.