"Majority of software firms either sell software (Sell fully or SaaS), or make money by advertising. If they are not going to make money by selling, who is goin

"Majority of software firms either sell software (Sell fully or SaaS), or make money by advertising. If they are not going to make money by selling, who is going to pay the developers?" The majority of programmers don't work for "software firms" that sell software. They are paid by, yes, advertising, financial services, various industrial things, the government, and just about every other industry.