Firing middle managers is a fun way to kill the company. Not that cleaning house is a bad idea. Unfortunately the people making decisions of who to keep and who to let go are usually idiots.
Middle Managers are promoted for two reasons: technical expertise and ass-kissing expertise. Now the technical experts tend to not mix well with incompetent parasitic c-suite types idiots. The ass-kissers are beloved by the c-suite as that is their only role in life.
So when firings come around guess who they get rid of? Then 1-3 years later everyone is shocked when everything starts to fall apart.
The last major antitrust action on this scale in the U.S. 8 years to process.
https://en.m.wikipedia.org/wiki/Breakup_of_the_Bell_System
This type of lawsuit is why the billionaire bro's are backing the senile rapist and felon. Making them play somewhat fair ruins their business plan.