I feel like this is comparing apples to oranges. A mostly 2D creative work environment, where it has to be good enough for the human eye versus a 3D modeling software that has to hold up against real world physical constraints.

It feels like comparing bycicles to cars and saying look how cheap even this high-end bike is compared to these cars! Different products and use-case.

Further, even if photoshop is the technically more challenging product with more advanced features it has a much bigger market than CAD software thus naturally R&D efforts have less impact on the endprice.