Wireless laptop dock is one application. A 1080p monitor signal is 3.2 Gbps. Dual monitors is 6.4 Gbps. One "4K" display is 12.5 Gbps.
Wireless is notorious for quoting numbers that include protocol overhead and assume a near zero noise and congestion environment. The typical layer 7 throughput of 802.11 is about half of the link rate. Of course it goes down from there without line of sight in the same room.
