[nicpottier]

I think you are wording that a bit strongly. They are still sharing the source just saying you can't load it up on a server and start selling that service. (you can load it internally for your own use though)

Yes, Open Source has had a very specific meaning historically and maybe we need a new term but this still feels like they are following the spirit to me.

[ensignavenger]

Part of the "spirit" of open source is the freedom to use the software- including to use it to sell a service. This protects the freedom to fork the software, and pay for support or charge others for the support I provide for my forked version.