So it's the responsibility of a company to make sure then that laws are properly made / voted / etc? Where does this end? Why exactly do we still need politicia

So it's the responsibility of a company to make sure then that laws are properly made / voted / etc? Where does this end? Why exactly do we still need politicians then? Second, while such a ruling does indeed fix the situation, there are usually plenty of alternative ways of structuring a transaction to achieve a similar tax rate. Why would I ever bother making a deal with a country that has "screwed" investors over in the past?