While some now invest in some level of traditional advertising, it’s not what made them big. As you said with Tesla, they only started advertising when people started realizing they were crap, and even then compared to other vehicle manufacturers they spend little. Go Pro used influencers and content marketing by their customers, the Dollar Shave Club made it to fame through viral videos.
https://www.linkedin.com/pulse/viral-branding-10-brands-got-big-without-advertising-kent-lewis/
Ya I get what you mean, it doesn’t always work out for everyone without getting the word out traditionally, but it does happen.
Personally I think advertising only goes so far before a company just starts looking desperate by saturating the landscape with ads. Maybe that’s just me tho lol