Wait...but it is the AT&T from the Bell System. The fact that it was one of the spin-offs buying back the mothership probably has little consequence in terms of attitudes and/or business strategy. I imagine the AT&T ethos of old was pretty well spread between all the "Baby" bells and "Mama" Bell.
Also, you forgot the part where shortly after SBC bought AT&T, the "new" AT&T bought Cingular, a partnership between Bell South and the former AT&T. Oh, and the part where before buying AT&T, SBC also bought Ameritech, the parent company of the Illinois, Indiana, Michigan, Ohio, and Wisconsin "Baby" Bells, and Pacific Telesis, the parent company of Pacbell and Nevada Bell.
...and what of the other "Baby" Bells? Well, Bell Atlantic and NYNEX combined to form a company you may have heard of: Verizon!
Also, you forgot the part where shortly after SBC bought AT&T, the "new" AT&T bought Cingular, a partnership between Bell South and the former AT&T. Oh, and the part where before buying AT&T, SBC also bought Ameritech, the parent company of the Illinois, Indiana, Michigan, Ohio, and Wisconsin "Baby" Bells, and Pacific Telesis, the parent company of Pacbell and Nevada Bell.
...and what of the other "Baby" Bells? Well, Bell Atlantic and NYNEX combined to form a company you may have heard of: Verizon!
(source...and a fun read: http://en.wikipedia.org/wiki/Regional_Bell_Operating_Company...)