I understand your point, but I think firms, like people must be responsible for their own decisions. SVB is really NOT an investment bank. Goldman and Morgan are investment banks. This bank held tech company's money in deposits. They never gave a thought to rates rising or VC, PE, angel investing drying up. Thus they were buying bonds, etc. while paying zero interest to customers b/c rates were zero. But when rates rose, VC,PE, and private money dried up for these Tech firms to tap. Thus they had to turn to their own funds on deposit at SVB. This is as simple as an old fahioned bank run. SVB would have had no issue had money still been plentiful and they could have held their bonds to maturity. But with rate increases, much of the investments that SVB held were of coupons less than current market rates. So when forced to sell those bonds, those were sold at a loss and you can only sell so many bonds for 90 cents on the dollar before you go under.