This sounds like a very good plan. The best part of it is that a single country can institute it on it’s own - just start taxing products and imports by carbon! A big enough country could move the needle, and encourage others to take action.
Instead, the only actual ideas that actual people actually propose are 100% braindead.
Ban meat (lol), ban nuclear (lol lol), ban plastic straws (lol lol lol), ...