Openreach is not the only game in town in the UK. Virgin Media has their own extensive broadband network (hybrid fibre/coaxial). Smaller fibre-only ISPs such as

Openreach is not the only game in town in the UK. Virgin Media has their own extensive broadband network (hybrid fibre/coaxial). Smaller fibre-only ISPs such as Hyperoptic, Cityfibre, and Gigaclear also have their own physical infrastructure. And wireless providers are now competing pretty effectively with consumer-grade fibre. (I'm happy getting 400 Mbit and streaming 1080p Stadia lag-free on Vodafone 5G for £30 a month - who even needs fibre!)