Hubris caught up with Silicon Valley Bank. It borrowed short and invested long, a banking 101 mistake. It lobbied lawmakers for relaxed capital requirements, and it relied on a relatively small number of customers. I worked with tech companies in Silicon Valley for many years. Since its establishment in 1983, SVB had been an integral part of the region’s startup ecosystem, positioning itself as a “partner for the innovation economy.” It sought to differentiate itself from what it considered stodgy,…