Creating and promoting resilient, dynamic, indigenously Polish entrepreneurship should be a government priority although it hasn't been in previous governments so far
Creating gigantic unfunded mandates (like the 500 zl child payment) will not do a single thing to help Polish entrepreneurship.
The basic fact of the matter is that Poles would rather work for large international corporations (which often have printed employment policies and fairly transparent promotion policies and paths of promotion) than small family companies which have earned a reputation for screwing over employees and bypassing talented outsiders in favor of promoting meathead son who promptly drives the business into the ground.
Also, the individual stores in a chain have some degree of support from other outlets. I was recently buying shoes (at a Polish chain) and they didn't have the shoes I wanted in the size that fit. A small private store would try to sell me something else. The people in the store just got on the phone and found another outlet that had the shoes I wanted in the right size. They earned more customer loyalty through that than trying to get me to buy something else. And this is not a native innovation but practice learned from the larger international chains.
The more limits you place on employment the less employment there will be. This is an iron law of economics (like gravity in physics) that there is no way around.