It's interesting that we are entering 2017 and the most popular configuration for users are... But the stats cover Firefox users, not average PC users. I'd gu

It's interesting that we are entering 2017 and the most popular configuration for users are... But the stats cover Firefox users, not average PC users. I'd guess there's a lot of overlap between (people savvy enough to keep old PCs in service) and (people savvy enough to download a browser that didn't come built-in to the system). In particular, if you're using an older PC to browse the web, you're pretty likely to want to do some selective content blocking. I believe Firefox has more plugin options for that than the other big contenders. Similarly, Firefox may be the best choice on Windows 7. But on a brand-new Windows 10 PC, many people may be satisfied with built-in Edge.