[aninhumer]

But the answer to the latter depends on the answer to the former. For example, if people tend to rely on review sites to make their choices, you should make sure your product compares favourably to the competition, and then solicit reviews for it. (And if you can't do that, maybe your product isn't worth buying.)

[punee]

People tend to rely on watching television commercials to learn about new products. So you should buy more TV advertising. Correct?

[aninhumer]

The question was in a hypothetical context of a world without advertising. My point is that you can't talk about what a business should do in that situation without first clarifying what the alternative to advertising is in this world.

[dredmorbius]

Quite, yes.