There's a number of reasons. Those cars are expensive to manufacture and making an affordable car that looks like that is extremely difficult. You'd have to cut

There's a number of reasons. Those cars are expensive to manufacture and making an affordable car that looks like that is extremely difficult. You'd have to cut costs elsewhere compared to a more "boring" looking car. Additionally part of why those cars look cool is that they are very low to the ground and generally sacrifice visibility (especially rearward) for aesthetics and aerodynamics. People buying mid range cars want something more practical, even in a sports car. The last thing I would point out is that modern affordable sports cars do have more complex body panels, lights, bigger wheels, etc compared to affordable sports cars of the past. Body construction techniques make their way from exotics down to affordable cars over time much like engine technology. But the exotics will always be ahead. That's one of the things you can do if you are targeting a $100k+ price point.