这是因为DRM技术没有提供允许许可信息交换的协议。
This is because DRM technologies do not have a protocol that allows for the exchange of permission information.
也许相对于支持Internet的协议、主干线和服务器来说，开放源码许可更加促进了源代码和思想的交换。
Perhaps more than the protocols, backbones, and servers that underlie the Internet, open source licenses have facilitated the exchange of source code and ideas.
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