The whole chain of service provision between tech companies would have been at risk of unknown consequences and then there's the fact that a lot of start-ups that have popped up due to the mass firing would have been wiped out which has it's own sequence of unknown consequences.Why? That's it tech has no bearing on what went wrong. Could have been servicing any industry.
It's simply a bank that had insufficient liquidity to survive a run. You'd have to ask Trump why it was a good idea to let a large bank get into that position.
I still believe the bank should have been left to implode however.