I see it completely differently: if Microsoft wants Windows on Arm to have a big future, they should push for Windows on the M1 Macs. This would be a showcase,

I see it completely differently: if Microsoft wants Windows on Arm to have a big future, they should push for Windows on the M1 Macs. This would be a showcase, how well Windows can run on ARM, and as Apple machines gain market share push Windows developers to provide ARM-native versions of their software. Windows on ARM so far faced two obstacles, the lack of native software and the lack of great machines. Having Windows running on ARM Macs could deliver a helpful push here and also keep Windows relevant for Mac users. On the other side, there is no greater risk, as Apple isn't taking over the PC market any time soon. Apple will likely increase their market share, but even then it is just a fraction of the total market.