For the simple reason that a valuation increase yields returns for traders of short (disguised behind more lofty titles), much of which our current version of capitalism (with finance eleven times the size of production) banks on.
Experts they are not. They are leeches, latching on to whatever company can temporally improve the valuation of short, undersold or oversold to so-called greater-fools, in a system of the endless perpetuity of evolutionary ignorance.
We must design more intelligent operating-systems of humanity, to balance the short-of-self with the long of humanity better. Systems, whereby not the valuation propped-up by financial engineering determines the merit of a company, but the intrinsic value to humanity defines the merit-of-money we assign to a company.