https://www.techradar.com/news/wi-fi-adds-pound15bn-to-global-economy

The Wi-Fi Alliance has reiterated calls for adequate levels unlicensed spectrum to be made available to the wireless industry, arguing that Wi-Fi contributes $1.96 trillion (£1.49tn) to the global economy, a figure which is set to increase to $3.47 trillion (£2.64tn) by 2021.

Its survey into the economic impact of the technology takes into account factors like Wi-Fi’s role in improving consumer choice, creating new business models, improving access to communications services, complementing cellular and fixed broadband to boost their effectiveness.