The iPad or what ever tablet that is released that is dependent on wireless connection for functionality will be the excuse for at&t and the other carriers to implement "metered data billing" due to bankwidth constrants. This could be the device that killed the goose that lays the golden eggs.

There is also the possiblity that distributed private Wi-Fi systems will be installed for use by corporations to bypass the likely bandwidth issues with the major carriers. What does this mean? The cost of consumer phone service may not be subsidized by corporations in the future.