The solution would have been a single fibre provider supplying the network, and service providers ‘renting’ network to use over that network. But others seem more worried by choice than aesthetics.
Service providers renting dark fibre, right?
Whether it is dark fibre or lit fibre doesn't make any difference to the commercial fundamentals:
1. Someone has to build this network
2. Someone has to own and manage this network
3. Service providers need a way to interconnect to this network so they can rent it
We already have such a national, shared fibre network: it's the Openreach PON network. Sure, it's lit rather than dark. It could have been built dark, but it doesn't really make any difference to commercials. With a dark fibre network, providers would likely have to install their own equipment in the head-end exchanges - and there would be 30 times as many backhaul cables into the exchanges, and huge fibre patching areas required. Those are just practical difficulties, which the lit network avoids. The dark fibre would allow sale of ultra-high-speed services (like 10G); hardly anyone wants to buy those today.
Commercially though, it would be the same. Openreach, who already own the copper infrastructure had no financial incentive to run fibre alongside it to the same set of captive users, *until* competition forced them to do so.
Could you have a government-financed fibre network running *alongside* Openreach? No - look at how the Australian NBN turned out.
Could you have a commercially-financed national fibre network running *alongside* Openreach? No - who's going to pay for it? It would just be like having one giant monopoly altnet instead of multiple altnets.
In any case, if Openreach were left with a copper-only network it would die from irrelevance, so it would be forced to roll out fibre just to stay alive. Which is what's happening today.
We also have something close to a national dark fibre network: we have a national open access duct and pole network. If someone wanted to install a shared "last mile" network and rent it out to service providers, they would be free to do so. The reality is, nobody wants to build it, and even if they did, the service providers don't want to rent it. It looks better to their investors to say they own the asset, rather than rent it. The rental case would expose more clearly how dubious their business plans are to make money in the cut-throat retail ISP sector (which, frankly, nobody makes money out of)