Fundamentally, the electromagnetic waves that carry the data are going the same speed. So the increase in data rates is being driven by the efficiency of the network algorithms and the nature of the data structures that encode the data. The algorithms presumably transfer the data in fewer steps (decreasing the time of transfer) and the data-structures allow some expansion in the effective band-width (increasing the amount of data per time).my only point was 5G phone service, once it is here, will eliminate any need to have a cable or satellite box.
although I'm sure Verizon / AT&T / and the others will simply jack up the mobile bills...
Fiber optics are interesting because they decrease the latency simply by having the data go at the speed of light in the glass fibers (roughly 200 million m/s). This blows away wired-technologies because charge density waves in wires (what people refer to as electric current) are limited by the wave speed in the wires (which is typically much slower).