Of course they'll find them slow selling... They don't make them!

Tough to move product that doesn't exist

The majority of Motif 88's are used primarily as stage pianos, the majority of 61's are used in multi keyboard setups. But somehow, Yamaha still manage to make a 76 without going broke.

The trouble with not making a 76 in so many products is that you are forcing those that actually want a 76 to go somewhere else. Brand loyalty is important (or SHOULD be) to any company, and even if profits are slimmer from 76 sales, you are keeping the customer, rather than letting him get snatched up by the competition...

He may never return.