I'd argue that university degrees don't even sufficiently prepare students to work for someone else. A lot of the "soft skills" required for career success such as: self-marketing, business communication, personal finance, sales, politics, etc... are picked up on the job or from the environment (parents, networks, ...).

A potential solo indie-dev would probably be resourceful enough to go the autodidact path, or cherry-pick their own course plan at a university. Since credentials are less important for a self-employed person, they can get the same value from learning resources.