I have a perfectly good understanding of "brand equity" as you call it. There are good expenditures toward that end and there are poor expenditures toward that end.
Or is it your contention that all marketing campaigns are equal? That there is no relevance to companies that actually measure return on invested dollar for advertising and marketing. I wonder, do you think decisions about the size of marketing budgets are simply a fixed percentage of annual sales? Or do you figure there might be a relationship between marginal additional investment in advertising and marginal additional sales?