Also, correction: Jess made more than me. However, Jess also had a huge complex about wanting to portray essentially a "charles in charge" persona all the time. If you may remember. Jess was not about dating equals.
I think they've gotten input from society at large. Male and female. From their moms and dads as well as their dating partners. From TV shows as well as cute girls flirting at the bar. It's everywhere. Women didn't create it, neither did men, it evolved over time due to whateverwhateverwhatever, white male dominance, and it's irresponsible to ignore the whole picture of that.
And I'll admit: when you're using to making more than the people you date, and suddenly that switches, it is different. There is a bit of a mental shift. But it's easy enough to come around and shift instead of making a stink about it.