> What can reasonably be done to combat it?
It was enabled by deregulation, so regulation seems important.
That was enabled by more overt bribery of politicians (PACs, super PACs, etc.). So stop the bribes.
That happened simultaneously with changes in how business was depicted by media, whether news or entertainment. So . . . convince the heads of that small handful of companies to change their representations.
And so far that's just the US. All of these things are global.
My point is that just combating the existing problems is akin to whack-a-mole. A new pervasive philosophy will replace neoliberalism, though. Maybe put effort into pushing whichever of those seems best?