DY
It was you who first mentioned supply and demand. There is no shortage of dates available and yet many girls suffer from “infrequent dating” despite their being a mire than adeqyete supply.
As to what can be done to end the crises, pretty much anything that takes away the upperhand we currently give guys (example let women say yes first instead of limitibg it to men, stop perpetuating the idea that 10% of girls are doomed not to get married). These are simpler ideas.
More complex ideas that would meet more resistance but would get more girls dates, and thus more girls married are increasing venues to allow nous and girls to meet. For example encouraging meals with similar boys and girls thus in effect granting each girl at the meal a “date” with several compatable guys at once.