I am not sure you understand what "deregulation" is. Certainly an antitrust & monopoly busting lawsuit from the US government is not deregulation. When a regulated monopoly is broken up into smaller, regulated regional monopolies, that is not deregulation. It is also not deregulation when state & federal law has to mandate that line sharing be allowed.
Deregulation is the removal or simplification of government rules and regulations that constrain the operation of market forces.
The break-up of AT&T & the 1996 Telecommunications Act were nowhere near deregulations.
Also I certainly do not believe that AT&T would have broken itself up or the regional operators would have opened their lines up, had it not been for government regulatory actions.
Deregulation is the removal or simplification of government rules and regulations that constrain the operation of market forces.
The break-up of AT&T & the 1996 Telecommunications Act were nowhere near deregulations.
Also I certainly do not believe that AT&T would have broken itself up or the regional operators would have opened their lines up, had it not been for government regulatory actions.