I wonder how these companies we all work for manage to pay our salaries by selling anything if nothing we build contributes to the needs of peoples families. A

I wonder how these companies we all work for manage to pay our salaries by selling anything if nothing we build contributes to the needs of peoples families. After all, as you say, people are only buying things to benefit their families, so how do they manage to be parted with their money on what you posit to be useless frivolities produced by the tech industry?