Well, is it attractive or compatible? The two are not actually synonymous and it makes a significant difference. While attractiveness may be fairly universal (although not completely so), compatibility is very individual. This would severely restrict the size of any marketplace so as to make the dynamics very un-market-like.
I mean... perhaps I'm not the best person to ask. My wife and I were both the first person the other had dated, and I was very clear on our first date that I was not having sex with her that night, nor any other night, until we married. There were a few other guys who wanted to date my wife, but since my wife and I were dating, it's not like they could outbid me. That's kind of what it means to be in a committed relationship. After marriage, I've had women hit on me, and the answer is a universal back off, because -- you know -- sex isn't actually a marketplace. All the couples we interact with have similar stories (Although obviously, marrying the first person you date is not typical).
I think your relationship highlights what incels are talking about. In the past, more people got married like you did. Pre-internet, people's options were more limited. You chose from who ever was in your physical vicinity: at work, in your town, in your school, etc. Now with dating apps, you have an almost unlimited number of choices and you could choose the most physically attractive among thousands instead of the most attractive among the ten or twenty eligible people in your social circle, town, church or school. This makes sexual selection more like a marketplace. If you are an ugly person, you are less likely to marry up because the marketplace has become too efficient for it.
Correct. Or, as Louis C.K. eloquently put it. "You either F-ck up, or F-ck sideways. Nobody F-cks down."
The core problem in the mating world is that the middle of the female attractiveness curve is having sterile sex with the top of the male attractiveness curve and then failing to pair bond with the middle of the male attractiveness curve. This is due to female hypergamy coupled with male promiscuity, arising from the dynamics of male and female reproductive constraints.