Those who can, do.
I work in the public sector. I've got a job working for taxpayer dollars. So, incidentally, does my wife. I have worked for private companies before, but I have never made a company, risked my money, and built it up.
If I had done so, I could claim that I had been helped along the way to any success. But I haven't, even though I've got a pretty decent education.
My wife's father dropped out of school in junior high. He worked as a mechanic's assistant, and bought a near worthless piece of land and put a salvage yard on it. To drag cars to his yard, he welded up an A-frame on the back of a pickup, and installed a winch. He got married. His wife (my mother-in-law) pointed out that he could always be making money if he towed cars for a living, and had him sell the salvage yard. He bought another piece of land, and fenced it. This was his impound lot. He began putting on barbecues, and inviting local lawmen (especially the constables) to it. He got a lot of tows. He bought proper purpose-built tow trucks. He hired drivers. Soon, the man had a wrecker empire. While buying wreckers, he bought an ambulance. He got his EMT certification, and began running it to emergencies, and doing transfers.
Then he paved a five acre strip of land, and put up storage buildings, to make a U-Store-It facility. Then he passed away, sadly before I ever got to meet the man. Before he died, he had taken a modified pickup and a scrap of land and turned it into three businesses worth an accumulated million dollars, on an 8th grade education, by the late 1980s. Oh, he rightfully shared his success with someone: his wife. She minded the house, reared his kids, handled the office, performed vehicle releases, insisted on cash payments at night while he was on a call-out with a Beretta .32 in her robe pocket. There is little doubt that she was an indispensable keystone to his business success. She was his spouse. His partner in all things.
But I don't think that our president was talking about your marital partner, when he told us that our successes in private business are derived not from our own labors. Sorry, Bernie. All of those countless times that you got out of bed to go impound a vehicle for a deputy making an arrest, or to pull out a car that went too far on the shoreline-- THOSE don't mean as much as your high school English teacher. You know-- if you'd ever gone to high school.