They’re selling equity to get capital. That’s pretty dire straits, FTX was doing that before they went under (I’m not saying this is FTX, I’m just saying it can be akin to the nuclear option)
How does your statement make any sense?
(I am assuming that by "capital" you mean cash.)
SVB had to liquidate good assets quickly, so it sold them at a loss. That means its capitalization compared to liabilities (deposits) could be in “uh oh” territory.
So it sells capital on the open market to shore up its liquid capital. Yes, most every capital raise works mostly like this. But it’s notable here because of what it portends.
A healthy company doesn't generally sell shares in itself (except perhaps to fund a major expansion). Selling equity is a last resort when you don't have better funding options (retained earnings, debt, ...).