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Adblockers stop publishers serving ads to (or even seeing) 1bn web users - Press Gazette
(pressgazette.co.uk)
This is a most excellent place for technology news and articles.
Besides Pi-hole, there's Adguard. The "home" version works just like Pi-hole on a device on your network (but is a little slicker in my opinion), and a DNS service where you just set your router's or devices DNS to their service (less private, but no dedicated device required). That's an option that is not ideal, but far better than not blocking at the DNS level for anyone uncomfortable configuring a device on their network.