There are people who have done precisely that in places like South Korea where there is very overt discrimination against educated women returning to the work force after their children are a little older. If I were starting my own firm that's exactly what I'd do (and some day, I might).

There are some places in New York that at least have the right idea (I don't know about the implementation): http://www.cravath.com/benefits ("We have an associate re-entry program that is designed to foster a connection between the Firm and those associates who leave the Firm for primarily family-related reasons... we hope that these former associates will consider returning to the Firm if they decide to practice law again.").

"The market can remain irrational longer than you can remain solvent"

Please go learn what this quote actually means (hint: it refers to speculation, not consumption).

I know what this quote refers to (and it's not particularly kind of you to suggest I don't, if I may say). I meant to point out that engaging in "rational" behaviour when it comes to hiring in a market you perceive as behaving irrationally is no guarantee of becoming rich any more than engaging in "rational" behaviour when it comes to speculation.

You won't get rich. You will have a somewhat easier time hiring people.

The difference may be small enough that you wouldn't even notice subjectively.

Trust sparsity ("bozo bit") is an irrational behavior that doesn't make anyone rich. In general, it makes everyone poor.