Earlier quoted context omitted.
Again, I don't think the correlation holds in the first place. But if it did, there absolutely is a trade-off. It's more or less impossible to grow any endeavor beyond local scale without ads, unless you're lucky enough to be an industry with a strong viral or press component. Take a look at the S-1s of most companies that go public. 9/10 of the companies have been able to grow because of ads.
I don't think you understand what I mean by "there is no trade-off". Those endeavours are only useful if and to the extent they create happiness. Also: Companies need ads to grow because their competitors also have ads. That doesn't mean they'd need ads in if ads didn't exist. The one legitimate purpose ads serve – could easily be served through other mechanisms, e.g. by the press. Maybe the press would have to expan…
There's a big plumber app on the market already, but yours is way better.
How do you get plumbers to hear about your product?
1) The press? Uninterested. Plumber magazines or sites? Very low traffic - no way to scale.
2) Call or knock on doors of every plumber near you? If everyone did this, the spam would be unreal. Also inefficient and not scalable.
3) Referrals? You get some, but most plumbers aren't chomping at the bit to help their competitors. And because you started with so few, referrals are a snails pace and by no means exponential.
4) Organic postings and SEO? The big plumber app is way ahead of you. And 100 other worse apps clog up the listings. No one sees your posts.
See the problem? Without ads, you can't grow many many categories of genuinely valuable products. Even if no one else is advertising, you can't really grow without them.
This is barely a hypothetical by the way. I've worked with a dozen companies with similar situations.