Except for the fact that round wheel vs squared is totally out of the world comparison being it something related to core functionality of an object and not something which concerns look and feel or interfaces (mouse, multitouch) or aesthetics which is what Apple mostly innovated in. So your draw, could at maximum be same two cavemans both with round wheels except second wheel is chromated, has more comfortable lock/screws system and... costs double price. Also if first caveman wheel's customers are power-cavemans (haha) they'd could invest same money on two wheels... So your draw had to be a nice refined solid wheel vs. white space where a bike stood before going riding. Which in real world terms is a 'project realized' -> multitrack song/indie game/3D animation/cpu intensive ERP made, sold and cashed.
Ok, now is time for those flashy details.... I'd like one of those trendy expensive flashy wheels ... I'm sure it will fit in perfectly in my new large white-walled sexy cave...