These are not applications, they are services. Which means that the REAL question isn't whether they open-source the code (not saying it wouldn't be nice... bu

These are not applications, they are services. Which means that the REAL question isn't whether they open-source the code (not saying it wouldn't be nice... but it may come with lots of dependencies about their environment that wouldn't be easily replicable elsewhere) but whether their API is open. And in the case of R2, they mimicked the API for S3. Which is as close to "following a standard" as I think it's possible to get.