Like I said, what these people might also be violating anti-piracy laws. However breaking the terms of the TOS is nothing more then breaking a contract which does not have any criminal implications, only civil
How is the key seller violating anti-piracy laws? Is he offering the actual software... no...just the legally obtained keys. So again we are left with the TOS violation, which is at most a CIVIL violation.
I am not a lawyer, so I really don't know. I am just giving an example as to what laws
might be broken if one was being broken. The key word in my statements about this is *might* - as in I am not 100% sure.
One reason why it might violate anti-piracy laws is that anyone can download most microsoft products, but cannot actually use them without the product keys. So if you use a stolen product key to unlock the software to use it then this would be the action that would be breaking the law. Now if the keys are really "stolen" or not is probably a different question