When you think about it, the only difference is that the women on dates are a bet rather than a guaranteed lay. I know this sounds misogynistic, and to a strong extent it it is.
I don't blame women who accept free things from men, I would do the same. Still, I do think it's rather shitty that all of my female friends consider it everyday life to get men to pay for their drinks at bars with no intention of engaging them in conversation or etc and then be surprised that they aggressively hit on them with expectations.
Basic decent person logic: "This lady wouldn't have accepted my offer to buy her a drink unless she was interested."
Every female friend I know and my wife has admitted to accepting such offers - drinks, dinner, etc, - without any intention of following through with the interested party.
That's fucked up and is just as much taking advantage of gender advantages as men do.
I've found that many women think of it as "Men already have enough advantages, might as well take advantage of my ability to sexually manipulate them to even the score." As I said I'd do the same, but it is a regressive trend in terms of equality.
Check yo' selves!
Edit: Men of course still have a ridiculously unfair advantage in life over women, just talking about a specific issue.