I don't think people are averse to 2-cent payments. I can imagine a scenario where I regularly spend money on the Internet besides Amazon. I don't know how much I've spent on Steam, for instance.

What people are guarding against is optimization. I don't mind paying 2 cents. I do mind paying 2 cents and then becoming marked for upsell and becoming subject to a full-fledged marketing campaign, or having some recurring 2-cent payment be changed to $20. Cognitively, I know that I am no match for the kilonerds out there trying to extract money from my wallet. So the only move is not to play.