Also, some people measure their self worth on the size of their company's ad budget. And those same people tend to have stupid amounts of money compared to their childhood peer groups.
So buying ads is like adding a set of metal balls to a truck hitch. Revenue was never the point.
Also, a lot of entrepreneurs have short attention spans and constantly change things out of fear, taking it from easy to do well to impossible to know.
Whenever I tried to talk about them there's always someone who asks that question. It's a BS question though, because it presupposes that humans somehow always instantly adopt the great new thing, but history shows that we just don't.
(E.g. Marconi was called before US Congress to testify because they thought radio might be a scam.)
We have all kinds of awesome stuff that gets ignored. Or even simple obvious things that no one notices (Why do refrigerators have doors instead of drawers?)
Sorry for picking on you. Nothing personal. :-)