In 2011 I was faced with the situation that I had to introduce #Kanban to a customer with about 300 teams. I started to count the billable days and before falling asleep I already thought about which color my new Porsche should have. From the POV of a consultant, it is of course very lucrative to agilize 300 teams. From a company's POV, however, it is complete madness. You invest a lot of money, frustrate people, and the bottom line is that it's a big #suboptimization that won't lead to success.