How do you (and most other people, especially Americans) not realize how unrealistic this is? It’s such a common refrain to say “break `em up!” but it seems as if nobody stops to question why it never happens despite it’s popularity...

These corporations control the government because the same people demanding to “break `em up!” have also been demanding “small government!” for decades on end, which in practice simply means a government that works for the corporate private sector.

The morale of this story is that your solution is no solution at all, and to the extent that it is a solution the means to implement it are nowhere to be found.