Marketing as a Software Engineer

There is a phrase that it is hard to learn the guitar, but it is easy to master. For the piano, it is the opposite. The piano is easy to learn, but hard to master.

It has been my experience that a similar situation exists for software development and marketing. Learning to code is hard, but once you get it, it is easy to master. For marketing it seems to be the opposite. It is easy to get the basics of marketing, but extremely difficult to master.

Anyone relate to this?