Is it really the majority? Or just on macbooks and the high end lines like that? I didn't think my laptops were that old (3-5 years) and they all have removable batteries.
I hadn't thought about it, but I have a newish business class Dell and I don't think it does have a removable battery. On the other hand, I have a Dell laptop from circa 2011 and it does; in fact I got the extra large one that sticks out awkwardly.