I don't know. I don't think Microsoft will give up their cloud rights in the UK. I have the feeling it is more subtle that than.
While Microsoft is saying that they are not making a lot of money (aka: losing money :D) with it, they (as well the CMA, EU, FTC) have no idea about how this can be in the future and I do not see Microsoft giving up on that and taking the risk to give up something that may become huge even if it is just in the UK.
Time will tell, but I do not believe the divestiture is as drastic as giving up cloud rights in the UK.