You pay so much money, but looks like completely ignoring some important steps.
Proper Photogrammetry/3Dscan image acquiring: CameraRigs/Delightening balls/XRite targets/Proper way for shoot images. Preprocessing… etc.
Color matching pipeline: Nuke/Lightroom/Photoshop/3DLut Creator Pro/etc
Scan cleanup and retopology: zBrush/Mudbox/3DCoat/Warp 3
All this steps is important, and big studios use all of them.