Actual ISP network engineer here: I'm sure these people are having fun and all, but it's insignificant in the larger scheme of things. (correction to original post: I did not at first see an ASN for them, or announcements of their own IP space. They have an ASN and announce two /24s, and peer at one physical location in metro NYC). Real five nines network infrastructure takes significant capital investment. This part…
And that's true even assuming just bare costs without markups. Obviously when you take into account how much profit & graft is attached to every single level of that stack, it really starts to add up. Throw in the absolutely, inexcusably bad, awful experience nearly everyone has with the big telecom companies and their employees, and that's enough ill will to propel many an alternative DIY network.
Metaphorically speaking, you just told a bicycle owner what a terrible car he has. Or rather, warned him how much the car is going to cost that he doesn't want in the first place. Is it possible the bicyclist can actually tell the difference between a bike and a car? Maybe he even sees some advantage you don't? (As opposed to the implausible but apparently favored hypothesis by car-owners that no, he just likes punishing himself while unsuccessfully pretending the bike is a car. When we don't know a stranger's rationale we glibly tend to assume there is none, and they're just cray-cray.)
To make yet another metaphor, when all you know is hammers, the whole world looks like it's full of 1) nails, 2) hammers, and 3) things that suck at being hammers.