Of course it doesn't seems as if he is taking on 50 women, so the women are stuck with Joe Average for the most part.
Just because women would prefer George Clooney, doesn't mean they can get him.
And sure, modern society (at least for a while) has made monogamy the norm. Doesn't mean it is best suited for women's preferences.
Assuming all of a woman’s needs are financial, sure. But unless he is hiring Joe Averages to provide personal attention and emotional support (and there are issues with the viability of that), not really in the universe of what appears to be real human needs.
Maybe their preference would by monogamy - with George Clooney. But since that is not an option, the bets are off. In general, there may not be enough rich men willing to take on multiple women for a significant number of women to choose that option.