I only changed this tactic when I had kids. Because that changes everything.
I was also talking to some startups, and told them about the offer I had, asking them to beat it by offering 60K for less hours. One of them agreed, and I worked for them for 2 years.
I followed that model for a few more years, working mostly with service-based companies who were willing to bill me out for part-time work.
I could not afford private schools or college, I would need to watch my money on clothes and food, and we would have to live in a smaller home.
All of this could still be OK. They aren't even old enough for those things to be issues yet. But it is difficult to ramp up a stable income overnight, so I decided to go back to trying to maximize my income, to give us more choices in the future, as the kids grow up.
And we may still do public school or homeschooling, and may still live to the 60K budget. Time will tell, but I think having the choices available to us is wise.