Pros
I started with zero customers, cold called for 2 years and built a customer base, generated over $1,000,000 revenue alone as master technician and sole salesman. Then sold the business for 10x what I paid for it and moved to TN.
Cons
Too difficult getting paid from customers (dentists). A massive dental corporation (the biggest one...) bought my franchisor (a family owned company) Subject to too many supply chain delays out of my control.