A decade ago, Wi-Fi was considered a network of convenience, but not the primary network. Devices that were important and needed reliable connectivity depended on a wired connection.
"Over the past 10 years, more and more devices have shifted to being Wi-Fi only. Tablets and mobile phones are obvious, but there’s a wide range of IoT devices that are Wi-Fi only. And with Wi-Fi 6 and 5G right around the corner, many experts, expect to see an explosion of Wi-Fi-connected IoT endpoints over the next several years."