Quite. Like PhotoShop and so on. The sort of prog which you can copy across freely can also be downloaded again for free. So hardly worth the effort of copying.
I'm quite meticulous about keeping the details of things I've paid good money for. But even things like the free Open Office won't allow you to copy it over.
Yes - although it's usually not a problem to get Windows reactivated if it thinks you've moved it. Provided it is your own bought copy. Dunno about the pre-loaded versions.