Seriously, this reminds me of a question I have always being afraid to ask due to morality reasons. Was there any chance for the 911 jumpers to survive in any way, no matter how minimal?
Fortunately there are a lot of people who travel, and modern phones take remarkably good photos easily. The biggest immediate impact the "photographer" has is on framing the shot; but with high res images and you being willing to crop, you can do half of that job yourself.
So there should be another to replace Unsplash. And if the founders can guess on being acquired in a few years, then this isn't a bad plan.