Great Homogenization is a good term for it. A classic example is to look at houses built before construction materials were popularly standardized in the 2nd half of 20th century. Every house had something different or unique. The laborer carving the handrail was in the mood for something different this time and it is beautiful. Now... it's all IKEA copy-pasta.
It would be the same principle, but moved into code, documentation, audio, and other areas