In another forum here, 56ilywm1t requested stories involving harems created for reasons other than sex (at least that's my take on it).
Thinking on it, I do sincerely believe such situations are possible - perhaps even likely. To flesh it out, I'm thinking of a few conversations/situations I've encountered in the past that would support that notion:
1. Met a smoking hot girl, likely about 25, in the hot tub of a health club (good place for such a girl to meet "successful"guys, I'd think). Good conversationalist, interesting. In a couple of conversations, I learned she was dating, and open to more dating (not to worry, I felt I was waaaay out of her age range). She seemed pretty matter of fact about it. A couple of months later, I learned she'd moved to Florida where she'd met and married a very well-off man in his early 30s. My impression was that she was husband-hunting, but that she was very up-front about it;
2. I met another very attractive woman who lived in one of the high-end suburban communities in my area. We were talking about all sorts of things, she was married to an older man, and I'd asked her if she was ok with that. Her smiling response: "Oh yes. I'm very content. He takes very good care of me;"
3. I knew a couple who were polyamorous, a long time ago. Both of them quite attractive. I asked the girl about how poly worked for them. She said something that stuck with me to this day: "X, you just have to understand that it's possible to have a perfectly good, successful, loving relationship that can also end happily and successfully with something other than 'till death do us part.'" About a year later, she got a great job offer in her home country (Hungary), and they split amicably;
4. As I've aged (I don't think I'll ever mature), I've come to value intelligent discourse right up there with affection and intimacy. I'm not saying that beauty doesn't count - it does - but beauty is not even close to the most important factor, especially if it's outweighed by narcissism, etc.
So, that being said, what would be qualities other than sexuality or love that would foster a harem? Safety; security; trust; intimacy; intelligent conversation; financial considerations; rearing of children; continued education of children; (possibly) business relations; other?
Anyway, it's an idea...