Here still with a question on the "importance" of having an AMP enabled site.

1. With websites now optimized to load in less than 3 sec
2. With 4G LTE of download speed of upto 12Mbps and upload of upto 50Mpbs
3. With 5G now coming onboard promising us 490Mbps and 1,4Gbps.
4. I've used 4G and all sites i visit are just instant. (Doesn't even take 2sec load download)

Qn. What sense is in the rush for AMP now?