This makes so much sense in high-rise apartment buildings where everyone has their own cable connection and wireless router. The cable companies don't want you

This makes so much sense in high-rise apartment buildings where everyone has their own cable connection and wireless router. The cable companies don't want you to share your connection -- they want everyone to pay up. But sharing is much cheaper for end-users. Good luck with this, smart idea. Incentivizing broad adoption is the hard part. ;)