Back when it was popular to have a flat structure or no managers or whatever I started suggesting "Every type of management works until money gets tight." I think the principle still applies, but a more useful/general version is pick your structures and processes around resource availability (good vs bad times):

Good Times: pick something that can amplify abundant resources. There is going to be less bureaucracy around decisions and spending so move quickly and place lots of bets while you can.

Bad Times: pick something that works with meagre resources. You're going to spend more time justifying spending.