ATT is still pretty broken up. Its components turned into Verizon, QWest and ATT. The vertical integration (every US telecom device before the breakup was physi

ATT is still pretty broken up. Its components turned into Verizon, QWest and ATT. The vertical integration (every US telecom device before the breakup was physically manufactured by an ATT subsidiary) is gone. Meanwhile, I don't see how having more than 3 companies building cellular infrastructure helps at all. Regulated access for MVNOs seems to fill the competition niche.