That's the cost of doing business in some countries. The buck is paid to the government and that extra cost is passed down to the consumers. All the while the consumer is thinking the government is doing them a favour but in fact it's just a vicious cycle.
Not really... if Mac prices reaches the sky, consumers will buy from other brands. That is, profit margins will decrease, resulting on less social inequality. Shareholders don't have any moral. That's why governments exist.