This applies individual-person logic to a company. Maybe a person can have a bunch of separate $200k accounts, but it would be strange for a company to do that. If you have a dozen engineers, that's just one month's payroll. I would expect a company to have some buffer in its bank account, not to have literally 100% laddered rigidly in T-bills.

This also doesn't reflect on the fitness of the companies in question. If you're starting a software company, you should be able to go to the bank and it should Just Work. If it doesn't, that's the bank's fault, not yours. You shouldn't have to think about the average duration of the bank's bond portfolio, or about how many interest-rate swaps it has on the books. That responsibility and risk should go with the bank. That's their role.