To be a little harsh...I could never understand people's logic in thinking that- 'if you want to work for someone definitely get the degree, if you're working for yourself, don't worry about it'.
Company's look for candidates with certain degrees because it predicates a certain skillset. Those skills make that company money. Do those skills that are making another company money some how become non-existent when you work for yourself?
Point being, who you plan to work for should be irrelevant.