Paradigm shifts happen when old minds retire or die. Something like that, but for companies. If you’re starting a company now, you are _definitely_ hiring less people much later, and different profiles.

For sure. The original quote by Max Planck in his "Scientific Autobiography":

"A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it."

Admirers of this idea shortened it to, "Science progresses one funeral at a time."