[RunSet]

Honest, unpaid word of mouth might serve that function if not for the hired shouters and resultant ambient dishonesty.

Flipping the microscope, paid promotions distract from honest testimonials with no profit motive.

"We are improving your search results by prepending sales brochures."

[AYBABTME]

Ignoring financial incentives, you're claiming that a specific method of dissemination (word of mouth) is all that anyone could ever need, or some such. This doesn't make much sense. How can only one very specific communication method be the end of all that be, when it comes to a multimedia world. It's like saying one ever only needs masks to mitigate every communicable respiratory diseases. Masks are effective but far from reasonably being the end of the tech tree, the pinacle of all methods that ever will be.

Also it seems like your gripe is actually with advertising, which would be more sensible. Simply being against marketing is merely proof that you can't possibly understand what marketing is.