Why would that happen? US government appears quite happy to allow massive companies to operate as they please. There hasn't been much "trust busting" since, well, the "trust busting" era, outside of finance anyway.
Judge Greene's grandaughter presides over the case.
But. One difference was that At&T got something for agreeing (able to sell computers). What is Amazon prevented from doing??????
[1] The case, one of Greene's first after being named to the bench, resulted in the 1982 consent decree between AT&T and the Federal Trade Commission. The consent decree, later amended and usually called the modified final judgment (MFJ), provided for the Bell System divestiture, AT&T's spin off of the seven Regional Bell Operating Companies (RBOCs). The conclusion of the case freed AT&T to enter the computer industry, from which it had previously been barred