I'm pretty sure the GPL version < 3 only requires the source to be "made available" only if the binaries are distributed or sold. Google does this a lot. While you use their stuff they don't actually distribute it so they are not required to make the source available. If the binaries of the RA server have ever been distributed or sold to ANYONE though, that makes them subject to the that section of the GPL and the source would be required to be made available. It's a pretty crappy thing to do too. Profit from an open source project and then not contribute anything back to it is reprehensible.
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