It would be cool but they haven't done it and we don't have time to sit and wait. If we start self enforcing these rules on ourself then when it comes to election time people will be more open to voting for a government that does this.
The people likely to self-enforce these rules are exactly the people that would already vote for a carbon tax. The real problem are the majority who either don't care, or actively believe that climate change is a Chinese hoax.
