The reason they are not more popular is the high prices that
they get for these machines. 20 and 30 plus thousand dollars
Add the bulk and pedals that most dont know how to use.
They had there day and were great entertainers but the keyboards are here, light and easy to transport plus 4 or 5 thousand
for the top of the line. Just saying, Lloyd
PS: I have had several organs and speakers and know what it is
like to move them. I love the keyboards of today.