The theoretical solution would be to raise how much you are paying.
In this industry there seems to be no place for someone experienced who thinks that working 50-60 hours a week is bullshit, and would like to work half that. That tells me there's no "talent" shortage, since the employers aren't flexible at all when it comes to working part time and receiving proportionally lower pay. The moment you ask to work less than 40 hours a week the employer immediately assumes that either there's something wrong with you or you're willing to work for peanuts.