furloughing all your workers as soon as you hit $1M

You'd likely have a hard time getting them to come back the next year. Who is going to take a job that pays a normal daily wage but only employs you for three days? And can you really ramp the org back up up in three days? Maybe you'd be better off working for a few days then handing the job off to someone else for the rest of the year. Even then, good luck convincing the board that you're doing anything worthwhile coming in 3 days per year.

I think the equilibrium for this would be fascinating.