This is the right answer. The size of the company also often has a lot to do with different mindsets and what fits for some people. Some people like the relative stability of a large corporation (you're more of a "number" but you are more likely to be able take a paycheck and clock out mindlessly), the pace and learning curve of an agency/startup (higher risk/reward threshold, wildly wonky work-life balance), or even consulting as a different career path for more independent types.