Re: Why ?
I personally think about 30Mb/s, so around 4MB/s, is easily enough for almost everybody right now, and perhaps we should be looking at getting more people onto 30Mb/s rather than upgrading my broadband speed in Birmingham *again* (with concomitant price increases, naturally) to something like 100Mb/s (I just tested and get 76Mb/s on WiFi, never mind wired).
See, I don't entirely disagree. 30Mb/s is enough for most people right now.
The problem is that it ignores the reality of the network.
The places who struggle to get infinity now are people like my parents - who actually aren't really rural at all, but their phone line doesn't come from the nearest village - it comes from the wrong direction, meaning they're a couple of miles from the cabinet - never mind the exchange!
In principle it's very reasonable to suggest that we should get basic 30Mb Infinity rolled out to everyone before we worry about punting 300Mb/s G.Fast to the cities, but the problem is that even if you upgraded their cabinet to infinity, the "final mile"(s) would be the choke point - they're not going to sync more than 1.5Mb/s on a good day over the dodgy copper, regardless of how much fibrey goodness you stuff into the cabinet, and BT simply aren't interested in FTTH. Hell - they're still installing copper phone lines into new-build estates. I get that upgrading and overbuilding their existing network is expensive, but if you're fitting a brand new line into a new-build house, why the fuck would you install copper instead of FTTH as default? It's utter madness.
The only real solution is to bite the bullet and start rolling FTTH, and if you're doing that, you might as well run it as gigabit - there's no technical reason you wouldn't. Of course business considerations demand that you choke it down to 10Mb/s and charge through the nose for the "upgrade" to 70Mb/s on a line which could trivially link at gigabit, but that's by the by. The only sane upgrade that leaves you overhead for tomorrow's demands is fibre - and you're going to run fibre at gigabit as a baseline.
So my main concern is not the actual bit-rate you're getting and the growing gulg between town and country - towns will always get faster speeds just due to density, but the fact that the technology BT is chasing (squeezing every last bit out of copper) simply does not apply to much of the rural community, and is ultimately running into diminishing returns, whereas fibre can simply run at gigabit today (it could even run at 10G if you wanted to pay for it) and doesn't need touching for another couple of decades, by which time smart WDM optics will be capable of shovelling ever increasing quantities of data down each strand.
Yeah, gigabit is waaay more than you need, but the cost differential between 100Mb/s and gigabit optics is negligible and the extra upload speed actually is useful for things like overnight backups and file transfers (about the only time you'll ever actually flat-line a network connection, even if you'd struggle to hit 100Mb/s with multiple HD streams and a few OS/App updates downloading).