The competition is not against current bidders, but also against historical bidders and averages. It means that even if no one is competing for a ad place, you play against virtual bidders.
That's one reason why ads are so expensive, maximizing bids by companies with high LTV causes bidding to be too expensive for bidders that didn't max out LTV in terms of very wide market.
It's especially troubling because impression campaigns also max out bids.
All in all having a good ROAS is not trivial for conversion based campaigns
I've asked OpenAI chatbot about building a complicated commercial system that processes copyrighted data in a way that attribution is lost and authors are not compensated.
The chatbot told me it doesn't mean copyright laws are lifted and the authors should be compensated and attributed.
The issue is complicated. So far there's no proof for Newag involvement. It's very different to how security researchers publish their results. All is based on hearsay.
I don't know about harvesting. But when advertising on YouTube the vast majority of what I got across industries were clicks made by kids on kid videos. Maybe it's fixed somehow by now, but I've seen thousands of dollars wasted on kid clicks.