I'm not sure why being very agenty would necessarily mean that starting your own company should be the best bet. Being an employee lets you reap the benefits of specialization and others having taken all the risks for you (most new companies fail), and can be a very comfortable if you can just find a position that lets you use your skills to the fullest. Then you can focus on doing what you actually enjoy, as opposed to having to spend large amounts of extra energy to running a company.
if you can just find a position that lets you use your skills to the fullest.
...
if you can just
I'm quite sure finding an ideal position somewhere in an organization that you agree with enough to stick to for the long term, and that motivates you regularly, and that lets you use your full skills, and that you actually enjoy (notice the conjunctive probabilities yet?), and that people would find you the best match, and that you can properly signal being the best match for...
...is nowhere near as simple or easy as that phrasing makes it sound like. I'...
If it's worth saying, but not worth its own post, even in Discussion, it goes here.