https://smallbusiness.chron.com/types-wireless-broadband-technology-57939.html

A simple reason is speed. Inside a VSLI system, wired connection is still fastest, for many reasons including because the overheads of current wireless systems would delay the data cycle (chronogramme of task schedule)

and the bandwidth, can can have multiples lines in parallel that allows simultaneous communication between different parts of the system with lower energy requirements.

hi Narula

Wireless Network vs Wired Network: Advantages and Disadvantages

https://turbofuture.com/computers/Wireless-Network-vs-Wired-Network-Advantages-and-Disadvantages