Historically through divestiture or rescission (the later is effectively impossible to do with a publicly held corporation). Though the Clayton Act has only bee

Historically through divestiture or rescission (the later is effectively impossible to do with a publicly held corporation). Though the Clayton Act has only been infrequently applied in recent decades. https://scholarship.law.cornell.edu/cgi/viewcontent.cgi?article=4184&context=clr https://scholarship.law.cornell.edu/cgi/viewcontent.cgi?arti...