Why not a single fibre infrastructure provider going back to ‘communal’ nodes allowing whomever to provide FTTP without digging again
You mean, like a fibre version of LLU?
I observe that these communal nodes would have to be large enough to accommodate splitters or ODFs from various providers. There would be patching between each incoming customer connection and those splitters. The extra pluggable connections would reduce reliability. Migrating a customer from one ISP to another would require a physical visit to the node to repatch, and risk disconnecting the wrong customer.
But the fundamental problem is that BT/Openreach would have to pay for all this, and then allow everyone else to use it. The ongoing (and regulated) costs charged by Openreach to the providers to recoup these costs would probably be at the point that the other providers would decide there's a business case for pulling their own independent cables into areas where it's cheap to build - and then you're back to square one.
Effectively what you propose is very little different to what we have today, except there is a Openreach-managed GPON layer on top. The cost of the electronics is only a tiny part of the total cost of the fibre build, and therefore has very little impact on the wholesale pricing. It has the advantage that ISP-to-ISP migrations can be done entirely in software without any engineer visits; and connections are fully spliced all the way, except at the CBT.
Now, having the fibres go to different provider's optical equipment would allow more "innovative" services like symmetric upload/download and leased line replacements. But that's not the reason the altnets are rolling out. The real reason is because they can make money in cherry-picked areas, by undercutting Openreach's regulated pricing - which has to be the same for both urban and rural areas.
Edited by candlerb (Fri 13-May-22 12:56:39)