Frankly the $2/share purchase price, and even then only with a guaranteed loan from the Fed, says to me that:
1) The real market price of Bear was $0 — nobody wanted it, period; and
2) The Fed put really, really heavy pressure on JPM to buy it. Not force, but really, really heavy pressure, while still letting JPM set the price. The only reason JPM didn’t do an ING-Barings style purchase — i.e. a token $1 paid for the whole company — was for just the reason you stated: it would have spooked the markets way too much and left JPM wishing it had paid $2/share. However, I suspect JPM thought this all through, and decided that paying $30+/share actually would not bring them out ahead.
Just think, less than a year ago, BSC was $159/sh. Amazing.
On the other hand, maybe JPM was $688 billion on the short side....