It might not be for you, but it is for those that do it.
What isn't simple is when you've invested years of time and money in developing a supply chain for the customers of your multi-million pound business and then a body of governance throws you under a bus for political ends.
Companies are well able to manage the standards required by the customers market, they are well able to handle tariffs, customs documentation etc.
But chuck in 98% anti-dumping duty, or a quota limit on a particular product as of midnight tonight and then it's not very simple.