When did autarky fall out of fashion? Perhaps when cheap (zero-interest) money started raining from the heavens, thus making every choice in favor of depending upon numerous third parties for critical aspects of your business system seem like a “no-brainer”.
The actual “no-brainer” (i.e., mindless) move is to build your castle in other people’s kingdoms, only to gradually realize that you have let yourself become merely a serf who will be tolerated as long as you pay regular tribute to the various feudal lords, who are (apparently) accountable to nobody w.r.t. to how they run their kingdoms.
That’s how you end up with expensive infrastructure, lavish complexity, high maintenance costs, overqualified personnel to setup and manage all that nonsense, and a severe distraction from your actual business.
The Big Cloud Exit FAQ , David Heinemeier Hansson ’s 1-year review on why they left the cloud is an inspiration for everyone who’s busy with actually running a business, instead of playing house with buzzword-laden technology-focused navelgazing.