I think the point of OSS - and there are various flavors so this isn't some unitary point, but more like a general direction - is the insight that copyright isn't actually a good model for software development. OSS licenses are a hack to sidestep fundementally misdesigned legal structures while staying within them. But because OSS uses licenses to create a more open development model, it's restricted in what it can do; it's "just" an EULA essentially.
Ideally, we'd fix this in the law, not via tricky licenses, but we don't live in a world where that ideal is anywhere even close to a serious enough problem to be addressed - at least, that's my take on "the point of the [OSS] licensing".
The various flavors of OSS try additionally to either use various other approaches to encourage a more open model in a closed world, or conversely don't bother since it's a hopeless endeavor, or vary exactly how open they want things to be; but the general gist is that the license is a hack; it's a design limitation, not by design.
Yeah — clearly they're acting in total accordance with their own interests. My point is that they're acting contrary to ours.
They make perfectly legal use of that code. What they're doing seems to be in my interest because if they do it, it means I could also establish a business using permissive code to run it and hopefully make money off it. It's good news for many wannabe startup founders out there.
If that were the point of the licensing, it'd be encoded in the license. This is the branding of the license, which is just innuendo. Amazon doesn't belong to any church that recognizes the spirit of Open Source, instead they just read the license and follow it.