Because office gear ist not a
game controller. You have to design games around the limitations of these input devices meant for something else.
A modern game controller is not just 14 buttons, the SNES/PS1 age is two decades in the past.
QED. That thing is outdated since five years and doesn't represent the current state of art. Its design is 13 years old now. Nobody supports the 360 controller on consoles anymore, because it has a superior successor. You're proving my argument.
Side note: Microsoft started selling that controller for PCs to establish a baseline with Xinput. And failed. Controller support on PC is still a complete hit and miss. Because PC users barely own any. Even with your 360 you're already part of an elite. Most people never make it past $10 bargain bin controllers.
As a matter of fact, people use the cheapest crap as peripherals after all the budget has gone to the GPU. Back then they started released PC games on DVD instead of CD (that was in 2004 two years before Bluray), people complained they couldn't read them, while consoles accepted DVDs since 2000. The story repeated with GTA V for PC, which got a 7 DVD release for PC, while the first console adopted Bluray in 2006. Of course, nowadays PC games don't have any disc in the box anymore (downloading all content from app stores like mobile phones, with people complaining about download sizes now).
That's the thing with consoles: They offer game developers a nice baseline to rely on: A big HD capable screen with multi-channel sound, a certain APU with a certain amount of memory, a certain amount of storage (currently 50 GB), a modern high quality game controller with many features to design gameplay around. (Ever seen a PC game using an accelerometer ever? That's a video game standard now.)
The only thing they can assume on PC is some version of Windows with one of two barely compatible 3D driver stacks, a green one and a red one, for everything else you have to go with the lowest common denominator. Anything that has any additional requirements (even the five years old console baseline) sells like crap. (BTW: The most common amount of VRAM on Steam ist still just 1 GB.) That's why many devs don't even bother with porting games.