Originally posted by Tesla Companies advertise for a reason. That is it increases their sales. If companies didn't make more money after advertising, there wouldn't be any advertisements.
That is the myth of the hard-headed, all-seeing, businessman.
Companies advertise for all sorts of reasons, including vanity, habit, and that, if the boss is influenced by advertising himself (at least of a type), he assumes that everyone else is too. Lady L was a bookkeeper for a small company that spent over a £1000 each year on ads in a trade magazine. Each year the boss would would get a visit from a charming young sales girl to renew the contract. Because the boss was basically a salesman himself, he admired other sales people and wanted them to succeed, even at his own cost.
However, when Lady L made discrete enquiries among the clients she found that most of them never read the magazine, or if they did they had never noticed the company ad which was buried among others at the back. The fact was, the boss did not have a clue whether the ads worked or not, it was just a chancer. Lady L cancelled the contract.
Advertising works differently now. TV, glossy magazines and billboards are not longer the only or even most effective channels. People have become cynical about them anyway. YouTube influencers, celebrity endorsements, and prominence on Amazon (much as I loathe Amazon) are now more important. Influencers are cheap and Pentax should promote some.