The market capitalization of Berkshire Hathaway, although significant, does not indicate an intrinsic loss of capital allocation flexibility; rather, it reflects a natural evolution towards different scale constraints.
The discipline of capital allocation must adapt, not resign itself to a decrease.
A concrete example is the acquisition of BNSF, a large-scale operation made possible by Berkshire's size and strategic posture.
It is about controlling the investment approach, not worrying about the size itself.