Re: I am not sure of the law in various parts of the world where microsoft operate
MS can do what they like that is covered by the EULA.
EULA means bugger all in the UK, there are a couple of bits of legislation called the Unfair Contract Terms Act (1977) and Unfair Terms in Consumer Contracts Regulations (1999). These are soon to replaced by Consumer Rights Act 2015 Unfair Contract Terms.
Very shitty of Microsoft to force this on people and I hope the get their ass sued into the ground for this unacceptable behaviour.