Super cool. For those who are glancing over, this is a big deal. 5G isn't really like 4G upgraded. It's more its own thing. I believe this has been available though for a while and many telecoms have partnerships with FAANG beyond Amazon.
With 5G you can essentially split a network into multiple partitions and scale them independently on-demand called Network Slicing. (like cloud computing but just the network).
This could be extremely useful for security. Maybe even the death of VPNs. This is also useful for scaling network resources to services as they need it.
Short-term, things like "Tesla Free Network" could exist for their self-driving cars. Or, Uber offering free fast Internet to their drivers or a truly private device.
Long-term, I am concerned about the emergence of private networks with different access. Such as a "Google Network" or a "Netflix Network" that offer different services or privacy levels at different costs.
It's a crazy, scary, but also fun direction we are going.
Edit: Final comment. If you think this might be the death of AT&T with independent providers, think again . Amazon & Co. and others like Google are bringing their developer platform, while the telecoms offer their infrastructure. It's a gross partnership that makes sense. When you send bits over the network -- everyone will be getting paid except you.