The problem is that not everyone can afford that. In fact, almost no one can afford that. The internet as a whole is only viable because of vastly pooled resources - it could never have happened on a "my slice, get off my lawn" basis. Even if you can afford it, you're being vastly overcharged compared to a decentralized network. One that already exists in many areas, most of it is already fully painted with WiFi supposing people could actually all use it.

Cellphone-based systems are an inefficient use of bandwidth, as is explained in the article. This cost is passed on to you as poor data rates and unbelievable roaming charges (compared to the cost per gigabyte of home internet). Is that really the future you want?