For example:
- gambling, e.g. slot machines, sports betting
- healing crystals
- palm readings
- carnival games
Perhaps the right distinction is whether something is legally a fraud or not. But I kind of agree that most ads are scams and also that ad networks don't have the ability to separate legal scams from fraud. So I just block them all.
what about iPhones? They're ubiquitous enough that Apple probably doesn't need ads to let people know they exist, yet every at launch ads for them are plastered everywhere. Same with soft drinks and cars, just to name a few. Before you say "iPhone sucks", the same can be said for basically all other phone OEMs, and if your theory allows categorizing an entire industry as crap, your theory is basically unfalsifiable.
Or maybe, just maybe, the entire industry is crap and so many people are complicit such that it becomes a self-sustaining problem.
Another metric comes to my mind: if a newcomer has money to spend on ads, then it's a stable firm.
I'm sure there are more.
Henry hoovers are ubiquitous in the professional market in the UK and well regarded for durability, performance and the cute face all their cleaners have. Essentially anyone in the UK will have used, or seen one be used
Nah, they advertise (probably) for a similar reason as car brands do, to make the people who bought it already feel better and more reassured about their choice.
Also, obligatory "lucky 10k" xkcd: https://xkcd.com/1053/