Here is a kinda-example of lobbyists being good. There was recently a law passed by the lower house (Bundestag) in Germany, reflecting EU law, that ride-on law

Here is a kinda-example of lobbyists being good. There was recently a law passed by the lower house (Bundestag) in Germany, reflecting EU law, that ride-on lawn-mowers and other low-speed vehicles needed to be insured when on public land. This law failed in the upper house (Bundesrat), and no reconciliation between the two was possible, so the law has ultimately failed to be implemented. Maybe not the only cause for the upper-house to reject the law, but insurance companies - i.e. the people who would benefit from providing this insurance - were actually against this law, and fought against it. I believe their argument was that it would be too expensive to roll-out, and there was an alternative fund which would be better used to provide for the very rare occasions when an insurance payout occurred. [I've used lower/upper house terminology, it's a little bit more complicated than that, and can't be directly mapped to the US/UK/AU system, but hopefully that expresses the idea of what happened]