This is my dream but I often find a large majority of ENTJs sharing it also. It’s to run a high growth business doing what I love and working with people I like.
I have seen a ENTJ run a home depot store only to use that experience to create a medical corporation. Other ENTJs in a typical career seem to decide to start a business sometime in the future.
I highly doubt that most ENTJ start businesses to make money only. The reason is that once a ENTJ has money flowing, he/she can mobilize any project he/she wants. I’m sure this would do wonders for an ENTJ as they are always planning even in the deepest recesses of their minds without knowing!