There is an undercurrent online, even on HN, of something generally approaching "price discrimination is totally fine so long as it results me paying a lower price." As soon as more "fair" price discrimination schemes end up with the user paying 2, 3, 4x more than others (or than what they've paid previously) it's a great social injustice.

I don't like it either but it's kind of silly to spend most of your professional life trying to help companies maximize revenue then get upset when as a customer you can see that you're helping companies maximize revenue.