To add to the other comments, SVB also courts startup founders for their private banking arm, and there, too, the benefit is that they actually understand startup founders.

Example: After our startup went up in flames in 2017 my wife and I (co-founders) got "regular jobs" with nice salaries. Some time later, we tried to refinance our mortgage with Chase. The banker at Chase was very happy to serve us right up until the point where he asked if we had more than 20% ownership stake in any company. I said, well, yes, technically we own 80% of our defunct startup. He then said he had to look at the startup's tax returns for the last two years. I was like... ok, that's weird, but sure. He then informed us that we did not quality for a loan because he had to consider our company's income along with our own, and our company had lost half a million dollars in its last year of operation, therefore he considered us to have lost half a million dollars.

I was like... "Do you even know what a C corp is?"

We ended up switching to SVB, which had no problem refinancing our mortgage.

(Fortunately our balance in that account today is within FDIC-insured limits...)