Separating companies, while certainly a more blunt instrument, is far more broadly applicable when it comes to anti-trust enforcement than it is to come up with

Separating companies, while certainly a more blunt instrument, is far more broadly applicable when it comes to anti-trust enforcement than it is to come up with a specific policy proposal on a per-company basis. The latter would require an act of Congress each time a company went too far, and Congress moves too slowly, is too divided, and doesn't have the bandwidth to individually address every anti-trust situation with a new law.