You're questioning economical premises stated as obvious in a tech forum (so, where no special economical knowledge should be assumed). You're doing the right thing - why are they obvious? If he who stated them as obvious can't answer that with solid references, then it's not obvious; it's just an unfounded preconception.

Didn't downvote, but personally, I really dislike sarcasm used in this manner. It's not so much questioning as flat-out contradicting. And it does that in a way which doesn't help to bridge the inferential gap.