A bit off-topic, but you gave me an idea: What if Google did guarantee to host stuff forever when startups go out of business? It would eliminate customers' reservations in cases like this, and hence eliminate business reservations about going all-in on cloud services. The increased business could potentially more than cover Google's cost.

The trick would be the care and feeding of the software. But as the industry moves to more immutable infrastructure -- especially stuff like AWS lambda and JAWS -- this will become less of an issue.