[w1ntermute]

That makes no sense. By definition, if you can accelerate the growth of your business by hiring more people, then it is a case in which Brook's Law doesn't apply. It is a common misconception that Brook's Law applies to all software projects. It does not. I can think of several real situations where it does not.

[rhizome]

"Growth of your business" is a particularly nebulous term in this (your?) equation, can you clarify how it applies in this context?

Is it possible you're identifying a follow-on effect where funding would allow a company to buy both headcount and time with which to get the new people up to speed? Making a late project later is only an observation, and speaks nothing to how hard or soft (invented) deadlines might be within a particular company.