With a computer science degree you can make it big as a senior developer or even through being self-employed and self-sufficient. The knowledge you gain from the course sets you up to create what ever you want in this day of computers. I don't personally do it, but I know people who do. Plus you can break into finance with any degree supposing it's from a good university. Computer science is especially good since it utilises mathematics to an extent which would make you more employable for certain jobs.