Their module operandi went like this:
1. Offer money to license or buy a smaller competitor's content
2. If that doesn't work, crawl and clone the site
3. Pump a lot of money into Google Ads, so that the cloned site now appears as an ad above the legitimate site. Google makes such scam easier now by making the ads look like organic results - a non technical user would hardly notice.
4. The legitimate site just dies.
I was asked to build a tool which crawls sites, which I refused. But I learned how professional SEO works.