At a critical threshold, laminar flow decoheres into turbulent flow.
Turbulent flow is chaotic, it's many orders of magnitude less efficient than laminar flow.
The threshold between the two states is discontinuous and easy to miss until you've crossed it.
Once a system is in turbulent flow, adding more energy to it just makes it more turbulent, which might even decrease the output.
Adding more investment to a swirly thing will often just make it more swirly.
When turbulence is lower, the sediment can settle out of suspension and accrete along the bottom, lifting up the stable region.
If you scale something too early, you cross the threshold from laminar to turbulent flow and you get chaos.
This is why it makes sense to develop a strong base and then incrementally extend it, never going faster than it can absorb at any one time.
The secret to scaling things effectively is not even a secret. It's just to be patient.
Do the steps in the right order: walk, crawl, run.