As much as it pains me to say, people with good salaries can sometimes meet other people with good salaries in their city and fall in love.

This is scenario in realm of possibilities of a Disney fantasy. Well off woman will not look for sharing in half high living costs. If you haven't learned this yet, you will.

What bubble do you live in? I live in SV and can easily count 30-40 couples with a well-off woman and a well-off man in my social and professional circles, mostly where they both work in tech. That number will go up if I think harder.

European Union. Few capitals, and various major cities with around 500k inhabitants.

My dude, all it takes is for a 27yo Product Manager to fall in love with a 28yo Software Engineer. Or two lawyers. Etc. At least half the couples at my daughter’s school are dual income.

Male to female ratios at most of my workplaces so far had been maybe 10 to 1 or worse and the ladies weren't looking at all, at least not at the workplace. Companies could hire more PMs, POs, Scrum Masters, and "workplace animators", but it's not their job to associate couples. Lawyers... whoa... you better be from an appropriate family then it just works, otherwise it just doesn't.

Who said anything about finding a partner at your workplace? Your work shouldn’t be your dating pool for many reasons. Generally you meet someone outside of work. And … if you aren’t finding a professional that makes good money, I’d perhaps look inward. Really not that hard to find, despite your insistence it’s some sort of fantasy.

Most of these couples are people who grew up in and/or have strong networks in those cities to begin with.

Or they are immigrants. I am an immigrant myself and in my circles, >90% are married by the time they are 35.

Such couples have something inherited or presented by parents.

One partner does remote work, and the other moves for a job? That seems trivial and not particularly unusual.

Haven't encountered anything like this.