It's purely a profit maximization calculation - there's no moral "right" or "wrong", and certainly no "should" or "shouldn't".
Presumably, someone will offer unlimited bandwidth at some price - and ATT will either make a competing offer or they won't. That decision will turn on their view of the risk of losing customers, their cost structure and their requisite margins, not on some notion of apportioning their costs "fairly" to "bandwidth hogs". Evidently, ATT has concluded that, right now, they can pull their existing unlimited bandwidth offer and charge more to heavy users without the risk of losing too many of them.
I can assure you that ATT does NOT want to lose high bandwidth customers.
I'd also note that there are several reasons to believe that the actual cost of incremental fiber capacity will see significant downward pressure in the coming years. However, that doesn't mean ATT will pass the cost savings on. In order to realize that benefit as a consumer, you might have to deal with someone other than your current bandwidth provider. It remains to be seen who will emerge to fill that "unlimited bandwidth demand" space (ATT might well jump back in) and it should be interesting to see how this plays out.
Marty
Presumably, someone will offer unlimited bandwidth at some price - and ATT will either make a competing offer or they won't. That decision will turn on their view of the risk of losing customers, their cost structure and their requisite margins, not on some notion of apportioning their costs "fairly" to "bandwidth hogs". Evidently, ATT has concluded that, right now, they can pull their existing unlimited bandwidth offer and charge more to heavy users without the risk of losing too many of them.
I can assure you that ATT does NOT want to lose high bandwidth customers.
I'd also note that there are several reasons to believe that the actual cost of incremental fiber capacity will see significant downward pressure in the coming years. However, that doesn't mean ATT will pass the cost savings on. In order to realize that benefit as a consumer, you might have to deal with someone other than your current bandwidth provider. It remains to be seen who will emerge to fill that "unlimited bandwidth demand" space (ATT might well jump back in) and it should be interesting to see how this plays out.
Marty