It's a win, because people will not fear Google shuttering their experiments, and thus will be more likely to use them. It's also a win, in that it furthers a common good: if Google abandons a venture, why would they be upset if someone picks it up and succeeds? It's also a win, in that it boosts the open-source community (or industry, whatever you want to call it), which is also a win-win. If you want to by cynical, it would also be a win in that you could spin a narrative about how Google's monopoly-fueled profits trickle-down via open-source projects and thus unregulated capitalism works.