I've done product research on this when I was considering doing a project like this keyboard, and the results were very conclusive: 100% keyboards are pretty ni

I've done product research on this when I was considering doing a project like this keyboard, and the results were very conclusive: 100% keyboards are pretty niche. The audience for that project, like this one, was basically high end consumers. The majority of respondents used a laptop keyboard most of the time. For those who had an external keyboard, 100% was behind 60%, 65%, and TKL. A very large portion of those who said they had a 100% noted that they don't use their numpad in a followup question. Obviously my sample probably had some biases toward keyboard enthusiasts, but that's the target audience for this sort of thing! If you went true general public I think you'd find that an overwhelming majority just use a laptop keyboard, or whatever their company gave them without caring about layout. My take? 100%s are absolutely crucial for a very small slice of people. They are made to seem more popular than they are because they are the "safest" layout. Someone who needs a 100% can't use a 60%. Someone who prefers 60% can totally use a 100%. So companies make/give out 100%s, and they end up getting used a lot because of that.