For most it absolutely is viable.

Linux is great for the average person, great for experts.

It’s the “pro-sumer” people that struggle most often. They’re the ones who know windows pretty well, know what apps they want to install, and have became used to the quirks of windows. They struggle to adapt.

Most people use their laptops for web browsing, YouTube, Spotify, and basic document editing. They’d be fine with Linux. They just don’t use it because laptops are sold with Windows.