Apparently a lot of people don't even own a proper computer nowadays, be it a PC or a laptop, it's all just phones/tablets. In fact I know a university professor teaching CS and he told me that obviously not everyone, but a growing population of students starts the CS course without knowing how to use a mouse. They all have laptops, they know how to use a keyboard and a touchpad, but unless they are gamers they probably have never used a mouse.