Windfall taxes have suddenly become quite popular. With oil and gas companies reaping record profits from the rally in energy commodity prices, governments have been unable to resist the temptation to skim a bit more of these profits. It’s hard to blame them - the energy crisis has pushed most governments in Europe to come up with billions in aid for households and businesses. In the UK, millions have slipped into energy poverty, and the government has had to act urgently, too. India has also imposed a windfall tax on crude oil and fuels.…