Since the goal was to make money: I imagine some of the "guardrails" the AI was set up with included emphasizing that it's exist to make money. I wouldn't be shocked if the prompt repeatedly mentioned capitalism.
So you emphasize the AI is a capitalist, then point out the most successful capitalists give away free stuff all the time as marketing. So to meet its primary directive it needs to give away a bunch of free stuff with a snappy slogan.