Even if it loses 60% of its speed due to congestion, if the price and monthly quotas are comparable to my home cable connection, I'll be saying good-bye to Comcast.. (especially if they have any decent upload speed, I push a lot of docker/vagrant images)

I actually think the home market would be an ideal place for them to start, as its much less 'mobile' so if you get coverage, your not going to have spotty coverage while they fill in the gaps.