>The author advocates for treating telecom infrastructure like public utilities, but then says that competition is the answer. These are not compatible ideas!
Why not? I can choose to get my electricity and gas from any of about 6 different companies, and water from at least 4. They still come in through the same cables and pipes, but price and packaging varies.
>The author suggests that the cable companies should be forced to lease out their hybrid fiber-coax networks to competitors.
Again, here, BT have to do that as part of being able to have a (near-[1])monopoly on building those networks in the first place. That means people can get fibre to the cabinet/premises without having to pay for BT's overpriced and underreliable service, even if it runs over their fibre network for the last mile.
[1] BT have a near-monopoly nationwide, while some areas have their own local networks in addition, but these can not be nationwide. Virgin (formerly NTL/Telewest) have a parallel national network, which uses coax for the last mile more like US cable[2], but has a far lower overall availability, being in a general case only available in cities and major towns, and in many of those then only in certain areas of them.
[2] BT's network is fibre to the cabinet with copper from the cabinet to premises in most populated areas now(up to 80 mbit), with some lucky area having fibre to the premises(up to 1 gbit), and rural/undersubscribed areas having copper to the cabinet (generally, maximum rates of ~12mbit or worse; many can only get 0.5 mbit). Virgin's network can generally get 100mbit to most/all premises it serves, which is a far more limited subset of BT's. Local ones vary wildly and may be anything up to 10gbit, but are generally around 100mbit.