And if you look at the cost, I doubt anyone will bother. Cheaper to have three or four phone lines, each with FTTC on them.
It's clearly priced so that it can't undermine lucrative leased line business.
It doesn't undermine the leased line business in quite the way you think; it actually augments it. But you have to think business, and not residential or homeworker.
The starting point, for comparison with leased lines, is that the upstream is the important figure, not the downstream.
The second thing to look at is to see that FTTPoD is only the Openreach portion of a solution, and it needs to be wrapped up into a complete solution by a CP (or ISP). We are used to retail ISPs that add the Openreach FTTx product alongside a wholesale contended backhaul.
However, some business ISPs are combining Openreach FTTC with an uncontended backhaul, setting symmetric speeds, and making a product known as "GEA Ethernet", or "Ethernet over FTTC". These products come with business SLAs.
I've seen the latter, as a form of "entry-level" leased line, priced at £130pm for 2Mbps, and £200pm for 10 or 20Mbps.
The next step up from GEA-Ethernet is (copper-based) EFM circuits. I've seen these priced at £300pm for 10Mbps, and 20Mbps priced at £450Mbps.
Beyond that, you can get proper (fibre-based) ethernet leased line circuits for £350pm for 10Mbps.
It would seem to me that they could wrap the FTTPoD product inside one of those "GEA Ethernet" wrappers, set a symmetric speed of 30Mbps, and price it at around £350-450pm. That would make a natural progression of the GEA-Ethernet line, replacing the top end of the Copper-EFM line, and act as a new entry-level into the fibre-ethernet line.
The advantage for BT/Openreach is that it allows these entry-level leased lines to be built using access network technology that is shared with the residential rollout, rather than being installed in a dedicated, ad-hoc fashion. The advantage to us, eventually, is that the gradual take-up of these lines makes a nationwide-ish FTTP rollout more feasible.