Sure the cases you mentioned do apply, but a lot of people would have to buy, if it weren't for free alternatives - regardless of whether those be legal or illegal. (the 'regardless' is not regarding the moral regards...) And there are quite a few freeware synths and effects that are better than a lot of commercial products. (synth 1 and Crystal of course come to mind).
scenario 1: warez or payware - not paying hurts developers
scenario 2: warez, freeware or payware - not paying still hurts developers (at least if scenario 1 can be assumed to be true, which I just take for granted here, because many other do)
regards,
fabi
