If you search for `site:github.com "acme.com"` in Google, you'll find numerous instances of the domain being used in contrived links in documentation as an example of how URLs might be structured on an arbitrary domain and also in issues to demonstrate a fully qualified URL without giving away the actual domain people were using.
This means that numerous links are pointing to non-existent paths on `acme.com` because of the nature of how people are using them in documentation and examples.
But it is not necessary to see the results that are being described.
If sites like my tiny little browser game, with roughly 120 weekly unique users, are getting absolutely hammered by the scraper-bots (it was, last year, until I put the Wiki behind a login wall; now I still get a significant amount of bot traffic, it's just no longer enough to actually crash the game), then sites that people actually know and consider important like acme.com are very likely to be getting massive deluges of traffic purely from first-order hits.
Small site operators like us know very well that the utility they can get by scraping us is marginal at best. Based on their patterns of behavior, though, my best guess is that they've simply configured their bots to scrape absolutely everything, all the time, forever, as aggressively as possible, and treat any attempt to indicate "hey, this data isn't useful to you" as an adversarial signal that the site operator is trying to hide things from them that are their God-given right.
Having honeypot links is the only thing that helps, but I'm running into massive IP tables, slowing things down.
This is not what I want to do with my time. I can't afford the expensive specialised tools. I'm just a solo entrepreneur on a shoestring budget. I just want to improve the website for my 3k real users and 10k real daily guests, not for bots.