They generally weren't given money.
They won contracts and provided services. They did it almost entirely with fixed base price contracts as well. None of the cost plus, which was typical in space, and leans more into handouts as people intentionally try to milk the government by going over.
Its like if the US government buys billions of pieces of paper a year from paper suppliers and you expect them to own the paper companies that sell them the paper because they took government money for a sale. Many even own their own mills, but thats now a government mill since the government bought their paper.