Hi Roger,
From the piano side the only thing I can think of is the "Natural Response Action" feature. However, having not looked at other pianos it's possible that others have this feature and just call it something else.
And while the questions you asked are good ones those are not the only reasons a comany would either sell or purchase another company's products.
There is a dealer network in place, there are hundreds of thousands of people who already own one and possibly another company could do it more profitably however, unless the Technics Brand Name was licensed to go with it much of that would be lost.
A company like Casio could probably make a go of it if they wanted to make higher end instruments since they are already setup to build keyboards.
Even the employees could make an offer to purchase the product line. That's how the compmany I work for came about.
Still, I really doubt it will happen.
Good thing they made them to last.
Heather
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Heather- Leesburg, FL PR54