We could see the (continued) decline of the global internet. China is already its own bubble; it's not implausible that it could spread to other regions due to conflicting interests.
If we continue down that path, will there be the equivalent of free tree agreements to limit the fragmentation?
Facebook is by definition breaking the Internet by having created a walled garden.
If we continue down this path maybe at some point companies will start relying on open protocols to allow it's users to communicated with other outside the bubble.
If we continue down that path, will there be the equivalent of free tree agreements to limit the fragmentation?