> IE beneficiary needs $X for a rational business investment, but can only get $X/4 out of the trust within the timeframe, even though 1000*$X in total is in the trust.

I mean, the trust can (usually) invest money without it being considered a distribution. I suspect that happens a lot based on the trustifarians I see in capital-intensive businesses and crushing it (due to below-market cost of capital).

I feel bad for their competitors having to prove themselves to a bank or other arms-length financier.