Answer:
opportunity to reach your full potential.
Step-by-step explanation:
Every single large corporation started as a small business, many of the most valuable companies in the world started in garages. That doesn't mean that every single small business will turn into Apple, Google, Amazon, etc., but money sometimes is not everything. Your personal potential might include happiness and a sense of "Yes, I made it!" and usually that only comes with your own business.
On the other hand, not everyone that works for a large corporation becomes CEO, and many factors may influence your career and your knowledge and capacity may not be enough.
Some people say that the best job is the job you enjoy doing.