Rich people invest, and investment creates jobs. Employees need to be worth the capital to be hired, but ultimately the investment creates the jobs ergo rich create jobs.
This is mistaking the effect with the cause. The markets create jobs, and investment realizes them. Without a favorable market, the investment would not happen in the first place.
No, a company will not expand unless there are profits. Suppose someone has a fence that needs painting, but the owner needs money to paint the fence. The government says tax the people with money and give it to poor people so they can hire someone to paint the fence. The capitalists says let the owner paint his own fence and buy his own paint.