Again, you are now adding in "Reasonable."
Are you suggesting AT&T should accept Renzatic's advice on how to handles it's 100M + subscribers? I guess you have all the information you need to plan capacity globally on the AT&T cellular network?
This argument seen on this site, and many others, boils down to people wanting to take advantage of the situation (I call it LEECH). AT&T made one big mistake and that is the they should have canceled the unlimited plan right when they ended the offering (almost 7 years ago). Instead, they were gracious to their customers and it has ended up that most of these customers are likely not the appreciative type.
AT&T has the FAR BETTER network in almost all respects. I think AT&T would do themselves a favor and just cancel the plans, and let the unlimited customers go if they choose. Likely this will further improve the network and they can continue to run away from Verizon, Spring, and T-Mobile.
It is T-mo sweet dream Att cancels UDPs.