How so? A fully blown laptop have more ports, memory, larger screen, full size "real keys" keyboard and ports. In order to make the surface small and portable alot of these things is gone, I understand why, and it's not really a problem, unless you need them. If you do need them then buying a surface or any tablet is a compromise, no?
How did you get to the 90% figure?
If you need a computer that has a ton of ports, supports 16-32GB of memory, and has at least a 15" screen, you're not going to buy a Surface, no. That's not what it's for. You wouldn't want to buy a Macbook Air for that, either.