The way we used to enforce those laws before the mid-70s was much closer to “big companies get broken up” than it is now.

The modern standard for how and when we intervene is not necessarily the correct one.

There are laws requiring the breakup of big companies.

Not solely because of their size, specifically.

But size is coincident with attributes that are in fact anti-competitive.

> There are no laws requiring break up of big companies!!

You're mistaken.

> There are laws around breaking up monopolies, which is a completely different concept.

Not really.