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I have also bought many products from other businesses that have made my life better. In most instances, I have only become aware of these products because these businesses have spent money on ad campaigns.That could have been a valid argument in 1970.
Today we have the internet. Instead of advertising it's not perfectly possible and easy to have other means of discoverability:
a) professional product reviews - a review site visit or Google search away
b) actual user reviews -- an aggregator site or Google search away
c) the product makers marketing material on their own website
d) blogs from people using the product
e) forums with people exchanging advice/complaints about the product
f) videos of people unboxing, using, showcasing, etc the product
g) the specs of the product, product manual, photos, etc online
h) online communities around a product category
i) for digital products, one could also try a trial/time limited/shortened /watermarked version of them
j) for products we encounter physically on some shop's shelves and want to know more about them, a quick Google search or QR Code can take us to the product page (and/or all of the above)
Unlike advertisement, none of these give an unfair lead to the maker than can spend more campaign money.
What's best, most of these add informational value (like scores, real world complaints, professional reviewing, etc) that ads, by definition, don't have.
We literally have more ways than ever to discover products, and to find the best products. Advertising is just random producers (random quality wise: just the company with the bigger pockets) shouting to make their wares stand out.