Honestly? I think it has to go the other way. I think a platform that has no accountability fosters a community that has no accountability. Imagine what Reddit would look like if, starting in 2007, they had to make advertisers happy the way say Disney does. You think RedPill exists? TheDonald?
Commercial success is one rein on behavior. There are others, but fundamentally, anonymity makes people horrible. The difference between Reddit and Hubski, on that basis, is that Hubski relies on pseudonymity because the handles matter, whereas on Reddit or Twitter it doesn't (on Reddit it used to, sort of).
If you look at your Facebook graph you will discover that the most bitter-ass fights on there are between total strangers on someone else's post. The most circumspect discussions are between people who actually know each other. Reputation constrains individuals and reputation constrains companies; the reason Reddit, Facebook, Twitter &c are such shitpiles is that the owners and operators of that site get to hold up their hands and say "ain't us, it's freeze peaches!" and shift the blame to people who literally cannot be blamed.