The problem is that we are often not the ones paying the companies we are shaming and therefore we don't affect their bottom line very much. In this case I don't think the vast majority of folks on HN are the ones hiring people on Upwork.
> If these kinds of posts are disallowed here
I'm not advocating that, really, I think the current "system" that HN has works pretty well. If it becomes a problem users will down the content hard enough that @dang and folk can figure it out.
> Maybe this is a startup opportunity: pay a fee to have your issues with company X broadcast on the social media that will be most embarrassing to them; hopefully you get redress soon.
It's an interesting idea. I suppose it depends on if the vast majority of users are interested in following a social media presence that more-or-less only puts out messages about companies doing bad things. I think major outlets like Consumerist have had success in this area in the past. The difference is that their signal-to-noise ratio is much lower and they usually only raise a ruckus about something when it directly affects thousands of people. If I'm little Timmy that needs to raise a ruckus about my GMail account being banned and I'm paying $20 to said startup to do it, they would be flooded with a lot of "news" about people getting boned.