Nah wifi was actually originally on 5GHz spectrum, with 802.11a. It came out shortly before 802.11b, which used 2.4GHz, and was objectively better…but component shortages for 802.11a devices made the inferior 802.11b more successful on the market.
Then in 2009, after 802.11b and 802.11g came 802.11n, which used the 5GHz spectrum, and introduced dual-band routers to consumers.
Most recently, 6GHz got allocated with the advent of Wifi 6E and Wifi 7.
Nah wifi was actually originally on 5GHz spectrum, with 802.11a. It came out shortly before 802.11b, which used 2.4GHz, and was objectively better…but component shortages for 802.11a devices made the inferior 802.11b more successful on the market.
Then in 2009, after 802.11b and 802.11g came 802.11n, which used the 5GHz spectrum, and introduced dual-band routers to consumers.
Most recently, 6GHz got allocated with the advent of Wifi 6E and Wifi 7.