Agreed. I tend to play games with lower graphical needs, so I feel the effects of lacking Nvidia support less. Ah, yeah, enterprise level applications are anot

Agreed. I tend to play games with lower graphical needs, so I feel the effects of lacking Nvidia support less. Ah, yeah, enterprise level applications are another beast. I'm currently dealing with maintenance and upgrade of legacy VB6 motion control systems at work, and there's just no way any of it can be ported out of Windows (2000). I somewhat disagree about the Grandma test (at least for going from Windows to Linux; macOS has a very different feel). What do most causal users do with a PC? What I've observed is maybe 60% web browsing, 20% documentation, 20% media. Ubuntu comes with a drop in browser, drop in spreadsheet/text editor, and automatically launched media players. Discoverability is an issue, because none of these applications have exactly the same names, but Ubuntu's Window Key search function is smart enough to find these drop-ins with even vague search terms. With that ability, I'm arguing that the workflow for casual users is very similar, with a minor learning curve for new names and icons. Windows works great for casual users until: Windows update kicks in, Windows encounters a vague error, Windows unified search stops working (or fails to find files they know are there), or some application won't work for some unknown reason. Any technology you are familiar with will seem more familiar than any that you aren't; I get that argument. But at the same time, people are capable of learning new things, and they already learned Windows from scratch. It took effort for me to learn how to use Windows, same as other OS's. And with Linux laptops starting to become more of a thing, we're going to see fewer people who's first OS is either Mac or Windows (unfortunately it seems like it's becoming more and more Android or iOS)