A lot of people were suggesting on other sites that SVB collapsed because a lot of money was held in government bonds and was hard to liquidate because of the rise in interest rates. If that was the case, why was there no facility for the bonds to just be bought back and instead the bank had to collapse into a bigger one that could make more profit from it (or have a greater burden themselves).
No that is not the problem. You see government bonds were not yet matured so government contracted to buy back the bond after a set period of time. If in between the interest rise then the it's the market price of the bonds that falls down because a higher interest bond will have that much value. So it was not the government who was obligated to buy the bonds. If they would have bought it, then it would have been like bailing them out. So technically it wasn't a wise decision.