This isn't about paying money (we'll pay the money), this is about whether the software will just curl up and suddenly die on you, while you're on the hook to meet a deadline where minutes count.
They reserve the right to do just that. In the case of sudden, unexpected company collapse, they may have no choice but to kill all their software at once. That is the hazard.
Unless you have a rock-solid contract with stiff penalties, software rental is a highly risky proposition.
