I think France and Spain are the best of the big European countries regarding coverage, but also adoption: If we look at the adoption ranking globally, Spain sits fourth at 90%, behind the UAE, China and South Korea and ahead of France at 83.6%.
Very few European countries convert coverage into subscriptions that efficiently, and I think it's driven by competition. You can get 500Mb symmetric connection for as little 10 euro [1], 20 for 2Gbps. DIGI has just gone crazy and in their own network they are offering symmetric 10Gbps for 25. Most people I know have 1Gbps because when is that not enough?
[0]: https://digital.gob.es/en/telecomunicaciones-infraestructura...