No worries. I am very soon they will embrace bitcoin and perhaps integrate bitcoin in their latest windows??
If the bitcoin wallet included with all Windows products, then that must be a very good booster for bitcoin ecosystem and we can see very good price appreciation with this of bitcoin value. I wish that could happen in very near future.
Even better if Microsoft provide the bitcoin wallet with some bitcoin in it. Even it is 0.00001, it is good for the adoption of bitcoin.
It would only introduce dust inputs with Windows users. Probably no one would use those BTC and it would just harm Microsoft's profit.
I personally wouldn't like it if they really do it. Afterall, users should be choosing their own wallet and not be given a wallet to use. There is always a possibility of it getting backdoors. It would also use unnecessary space for non-Bitcoin users.