A full stack developer starts out as a kid that is too poor to pay someone else to do the parts of an application they don't understand.

So they learn databases, linux, Photoshop (wait, if poor; then GIMP), Javascript, PHRUBYPY, and $100 of free adwords credits.

These poor, full-stack developers try writing their own legal terms, finding the best examples of good UI to copy, and setting up social media accounts for their projects.

They also have a friend that is good with Canon/RED cameras and can help record a promo video.