Honestly, even when there's money for medical attention, these people still exist. In Toronto we still have people like that, though from what I heard, less of them. Here, a man like that would've had access to all the medical help he needed at no cost, but there's no way, apart from arresting him and then getting a judge to agree he's a danger to force it upon him. Without revoking his rights, there's really no way to force help upon him. And definitely no way for Twitter or Google to do it.