1024QAM can give up to 10 bits/s/Hz spectral efficiency

8 MIMO antennas will give 8 time some data rate

1024QAM and more require huge SNR values which are only realistic with close proximity between stations.

The date rate printed on a WiFi product package is what you really get at home

WiFi provides better connectivity than a cable

WiFi has a central coordination similar to moblie radio (LTE)

1024QAM could give up to 12 bits/s/Hz spectral efficiency

80MHz bandwidth and more would present interference to all neighbour stations