(Sorry if that sounds harsh, it is intended more to be just a firm statement).
The complexity of the piano sound is very, very difficult to duplicate, although we've been trying for decades.
There is no question that electric pianos are more practical for certain situations (country houses in climates with high humidity, for example).
But those are exceptions where practical concerns outweigh aesthetics (like watching a DVD on your laptop on the train).
A fine, hand-made acoustic piano has no serious contenders at the moment, from the viewpoint of both the musician, and the sophisticated listener.
One could argue that fine, hand-made instruments are becoming more rare because they are more expensive to produce and the market has shrunk, but that is a different argument.