seo expert uk won^t sing a contract

There are some people in the world who like to be independent from the beginning to end. They don^t want other people to influence them in a any way. They feel that they are the only ones responsible for their actions and thus the idea that someone might influence them seems stupid for them. I can understand this attitude and I have seen it many times. It is especially visible when you think about artists. They won^t let anyone to change their art and the things that they do. They are as independent as it is possible even when it means that they will earn less money and eventually have financial problems. You have to face it when you will work with such artists in your life. You can^t expect them to act any different. This is how they work and that^s it. I was surprised when the seo expert uk that I have asked for help also didn^t want to sign a contract. He told us that he wants to be independent and that we can^t influence his opinion. He told us that he would rather get the money directly without signing the agreement. I had no choice but to accept the decision made by this seo in germany and let him work in any way that he wanted to. Do you think that I have made the right decision or not? How should I act next time I will have a similar worker?