[underdown]

The ad industry is a quagmire of fraud. Assuming someone got value out of money spent is tenuous.

[SoftTalker]

Agree, but I'm speaking more in aggregate. And even individually, it's not hard to find people who will say that e.g. an Instagram ad gave them a noticable benefit (I've experienced it myself) as you can who will feel that it was a waste of money.