Tycoons of today have build their own empires (Microsoft, Google, Apple, Oracle etc.), same principle, same philosophy.
When and why did it happen that flippers took over this market's mindshare? A young entrepreneur today dreams of selling out to Yahoo/Google/Microsoft as soon as possible. Quite often even before his business is profitable.
Hey, if you have a growing business that is profitable, you should keep it for yourself. Many people with money I know (so-called 'professional investors') dream of having such a business in their possession. Such business is not listed, so you cannot buy it on the market. What you can buy on the market (what is listed) normally grows slower and is over-researched and over-valued.
But of course, if you focus on building the cash flow for yourself, and keeping the option of striking it very big at some time in the future for yourself, then the whole industry of undervalued option-buyers (VCs, angels etc.) will be left without work. So the propaganda is put to work... When is my next funding round?.. A round of what? When is your next client subscribing to your app - that should be the question.
DHH thrives on being controversial, but the point he makes here is simply a well forgotten truth about entrepreneurship. Building your business slow and taking full credit for it for yourself used to be the norm before the flipper ethics kicked-in.