This really shouldn’t be mind blowing. It’s pretty obvious that proper planning can absolutely result in utilizing dev time effectively. There are loads of underlying technologies you’re using and you don’t have to have the next project fully planned to improve your systems and get prepared for it.

And how much money do you think you’re saving by firing people and hiring a new team 6 months later? Recruitment costs money. Hiring costs money. Onboarding takes a lot of man hours from your whole team, which costs money. And you lose all the institutional knowledge and familiarity, so you lose efficiency, which costs money.