> Antitrust enforcement would be great, but absent an 1880s-1910s level push, isn't going to happen.
Let's do that then.
> This still sounds like an improvement over the American consolidated market status quo, where the companies and shareholders retain more of the monopoly rents.
Except that you then get the union lobbying to sustain the monopoly instead of eliminate it, which makes it even harder to do the thing that actually needs to be done.
> Let's do [an 1880s-1910s level push for antitrust enforcement] then.
The last time that happened was a pre-globalized world, multiple decades of building pressure (including the passage of the Sherman Antitrust Act), and the youngest US president to ever assume office (Teddy Roosevelt).
That's a confluence of events I'm not betting on naturally replicating.
Step 1 would be passing an update to the Sherman Act through Congress that would survive the current Supreme Court.