The terms here are necessary to provide the services that we offer via Algorithmia. We need the right to run your code and make it available. It needs to be in perpetuity so that consumers of the API can put it in production with the assurance that it will continue to be available in the future.
That being said, the quoted passage lacks the context of the rest of our terms -- namely, yes, we get the right to make your work available, but in return it's OUR obligation to share the profits with the original authors.
(Kenny @ Algorithmia)