If these companies notice, they can file a UDRP ( https://en.wikipedia.org/wiki/Uniform_Domain-Name_Dispute-Re... ) request, on the basis that the domains infringe their trademarks, and were registered and used in "bad faith".
>and were registered and used in "bad faith". How were they registered in bad faith? He's not extorting money from netfilx, nor is he trying to deceive people into thinking he's neflix.
If the trademark already existed when you bought the domain, and especially if it's widely used and ambiguous, you're gonna lose that domain if the company comes after you.
Contrast this with the case of, e.g., McDonald, which is a widely used surname that predates the existence of the trademark. So long as you specifically aren't trying to cause confusion with the McDonalds restaurant trademark, you can use "mcdonalds" in a domain name.