My point is that what you’re describing would take a mass organized movement of protests and activism bordering on insurrection to accomplish.

The Bernie campaign didn't require anything this unprecedented. And just because it got kneecapped by the establishment doesn't mean they'll be able to pull that off every time against every candidate.

And it would still leave the global south exploited

We don't know what that type of government's foreign policy would be, and the risk of being no better than we currently are in that area is not a reason to write off all the other benefits that government would produce.

democracy in the workplace a long ways away

We'd be a lot closer to it than we are today. A union-friendly government would be a huge help, and many of those other policies (e.g., getting healthcare independent of your employer) would also increase worker power.