For much of the past century, the best career advice in the world was: go to IBM, General Motors, General Electric. Climb the ladder for a few decades, get a pension, retire at the top 1% of the income pyramid. That worked great until it didn't, and millions of people got left with no savings or useful job skills.

Today's world offers so many more paths for talented builders, beyond joining the currently hot company as a cog in the giant ad-tech machine and hoping for the best. As a data point, go read last week's article on how Sidekiq has made $13 million for a solo developer.