3D printers need to get way more plug and play for the average person to use them. I've got one, and when it's all calibrated and running and using good filament you can run it for weeks. Then comes the time to sort out the hot end change out the tube or something else and it's back to needing someone that tinkers with things.

There is also the other side, creating things to print. If it's not on thingiverse be prepared to break out the calipers and Fusion 360. Photogrammetry and AI could really help this out. take a video of the back of the remote with a missing cover and let some software handle everything and generate the STL file.