There is such a thing and it is worth pursuing. Rambam and others write that one should teach a child a clean and easy profession. Something, where he can earn respectable living and not requiring undue hardships. I think most people help their children not so much by providing them enough money to live but by teaching them right skills and trades and then helping to ease into jobs or business.
In our times, you can achieve same things even if your parents are not able to fully help. Get a (good) online degree, get a respectable job to feed your family. Then, you can divide remaining time between learning, teaching your kids, and trying risky ventures in Amazon selling and real estate to become richer.