Comment Fiber is cheap... (Score 1) 95
Honestly, it's not that much more expensive per foot. Also, in a lot of places, the last run isn't super long anyway. And the distance before you hit fiber is shorter and shorter in a lot of cases.
Also, the services are simple. You get a dynamic IP (more if you want a static IP). That's it. No email, TV, phone. Comcast has way more complex infrastructure and that's on them. They also got used to renting equipment and making money on getting dimes and quarters here and there. My fiber installation fee came with a optical to Ethernet terminator (a small box). I own it.
Comcast can get lean and compete on internet alone if they want to, but it's much hard to do versus about "unrealistic" pricing. Cheaper options for more is nice in this era of paying more for nearly everything else.