"One could see this change as being just another company trying to go proprietary without actually looking proprietary." -- I think this is the key, they have a

"One could see this change as being just another company trying to go proprietary without actually looking proprietary." -- I think this is the key, they have a right to do what they want and monetize as they want (and I think it is good to monetize), but it somewhat of a misnomer to call them "open source" in the sense of code-sharing freely according to some philosophies.