A few examples come to mind immediately: trading firms/hedge funds often have more capacity than that in their existing strategies; hardware businesses can have substantial up-front costs; companies with high COGS might need that much to just scale at the rate they're already moving, since each unit locks up a bunch of capital until it's sold.
Also note that the benchmark of “efficiency” should be a function of growth, not some absolute standard.
I think the thesis is thought provoking. Not sure yet if it’s worth anything, but it also doesn’t preclude businesses from having massive cashflow.
By definition focusing on things that don't grow your business because you have way too much money in the bank is going to be worse for your business than being forced to focus because you've only got a year of runway.