Dad, as in much of the known world, used to be more or less chief to sole breadwinner
What you described is an American narrative that has virtually nothing to do with post 1944 Polish society.
After WWII when all adults were expected to hold down jobs.
Nowadays, uncounted female entrepreneurs in Poland have basically changed all that
Huh? Where did you get that idea. The end of communism saw a massive expansion of female unemployment (especially middle aged and older women whose companies collapsed in the conditions of shock therapy. In the late 90s younger female unemployment was high because maternal leave policies made them all but unemployable.
Now that's changed and all educated young people are in demand, but entrenprenuership is not a major feature of young Polish women (or men). The entrenpreneurial period was just after the collapse of communism when everybody and his dog were either selling things on the street or starting companies (most of which went kaputt pretty quickly).