Peak Piano 1900

Nexcerpt cites piano manufacturing as an area where there's been technological regression since 1900:

The finest pianos in the world were built about a hundred years ago. Due to evolution in engineering, exhaustion of raw materials, and flagging business standards, we will never see their like again. Some people may build very good pianos; new forms of the instrument may exceed (in narrow ways) the magnificent machines built a few decades either side of the year 1900. But, from a musical perspective, there will never be a “better” piano than the typical concert grand of a century ago.