ethereum's 30M$ fundraiser was stopped by negative campaigns (actually there is more negative things I would have to say about this, but I actually hope they do some work). It didn't stop by itself. Next time there can be a more efficient process. People will then link to old discussions / guidelines. If you want to raise money, follow this, otherwise you will be campaigned against. Negative campaigners can have bad incentives, too. In the real world we have all kinds of laws, from securities laws to libel, etc. Imagine somebody using violence to achieve their financial ends, then things get ugly.