[Jach]

It's also a rather unconvincing argument when there are so many blatant instances of service abusers getting away with it on platforms that can afford very talented employees. In short, whatever it is they're doing is already quite ineffective. While in theory it could be a little more ineffective if we knew what they were doing, it's also possible that they could be a lot more effective if they changed what they're doing and were transparent about it. A hierarchical reputation system (vouching or invite-style) would solve many issues in many domains, for instance; its main downside is during hyper-growth phases where you need onboarding to be as frictionless as possible. But for a big established company like ebay, I think requiring a new account to be vouched for by an existing account which takes on some risk if the new one turns abusive would be quite doable.

At least in your IG example the ban is finite. I don't want the law to be used so bluntly but I'd really prefer if all bans had to be time limited, even if only technically where due to exponential scaling for repeat offenses the time exceeds expected human lifespans.