This:
> The subreddit arguing that it’s reasonable to give companies power over democratically legitimated governments
Is a massive strawman if you're referring to ISDS (which is what it seems). If you want a trade agreement, the terms need enforcement to be unilateral. But political actors in each respective countries will be incentivized not to respect that by internal pressures.
So there needs to be a way to settle those disputes, or else you might as well not have any trade agreement. You can dispute the merits of the current court system; I won't, I'm not an expert in that.
But saying that this means "companies have power over democratic countries" is absurd. Go look at supreme court cases in any country. How many are "[person] vs [state]" or "entity vs country"?
Democratically elected governments can act in ways just as abhorrent as any other entity; that's why the president doesn't have control over, say, what is constitutional or get to control monetary policy.