Who are these non-technical people who switch so easily to Linux-based OSes? I haven't met a single one.
My dad is fairly non-technical. He also go fed up with Windows. I've tried several times to see if he wants to use a Linux distro instead of Windows but something always got in the way whether that was specific Windows-only software (MS Office and it *had* to be MS Office, some video editing software that didn't seem to have a Linux equivalent at the time) or he wanted my sister's kids to be able to play games that wouldn't work with Linux. He ended up on a Mac for video editing and keeps a Windows machine for the grandkids.
My girlfriend had Ubuntu on her old laptop for a while but needed Windows put back on it to run some Windows-only software.
My mum got used to OS X eventually and won't change (even to Windows). If she goes to anything other than a Mac it'll either be a Chromebook or an iPad.
Everyone of my friends has something that prevents them from using Linux, usually some Windows or Mac only software or a device that doesn't work (iPods and iPhones that need iTunes etc).