I have a a Steinway piano, made in 1918--yes, 102 years old. Anyone who knows anything about pianos knows there are nearly 6,000 moving and stationary parts that allow a piano to function. Every one of these parts is available, and I can find, in most places in the country, a number of skilled technicians who can repair almost anything on such a beast, and a smaller number but still plentiful, of firms that can "gut" the unit and totally rebuild it. A "rotisserie restoration" in automotive terms.
Now, in the 1970s, there came to be "electric pianos", the most notable of these a Fender Rhodes. There's a very distinctive sound to these; you may not be able to pinpoint it unless you are a music aficionado, but trust me when I say "you would know it when you heard it."
So, why this contrast? Well, there are just a few people in the USA that are skilled at repair of an electric piano, and many of the electronic parts for them are simply not made any longer.
If you want that same sound as a musician, you are probably going to do it with a synthesizer.
Old electronics just don't last...