This is likely not useful in most west european homes (even gigabit connections are unheard of in the uk, 10 megs being advertised as “superfast”, let alone tens of gigs). But still a fun project!
That said 25Gb is a lot outside of switzerland.
Yes, “even” the barbarians of east europe have it. In romania you get around 10 gbps per second for roughly 10 euros a month from what i hear, and pretty much everyone has fiber. I believe Lithuania, Estonia and Latvia are doing great as well.
I think its worth choosing fiber in a new deployment, at least at the distribution level (between floors, or zones of the home). Most new computers come with ultra fast solid state storage, so even between systems on a local network, 10GbE speeds could be useful.
With the way the price of copper is going, and how much less efficient rj45/copper chipsets are compared to optical, I wouldn't be surprised if we see a shift to optical as a replacement to rj45 in the next decade.
Yes it's not necessarily nationwide but "unheard of" is way off, before you even consider Virgin cover a sizeable chunk of the country and their DOCSIS upgrade means they can push gigabit now.
In March 2021 the median download speed of UK home broadband connections was 50.4 Mbit/s
https://www.ofcom.org.uk/__data/assets/pdf_file/0020/224192/...
"Superfast" is not used to describe 10mbs, it is 30-300mbs.
When I lived in central London (tube zone 2), all that was available at my address was a wet-noodle quality 20 Mbps DSL connection. No BT FTTP, no Virgin, no Hyperoptic, no G.Network. This was in early 2022.
I now live in Switzerland and have a 25 Gbps FTTP connection, paying about 30% more than I paid in London for the DSL line.
It's a completely different world connectivity-wise.
However in a small town in Switzerland we have 25Gbps available. The UK could be in this position, but Thatcher happened unfortunately, and the project was canned.