First of all, the idea that Yamaha would stop 61 production if a 76 was made is idiotic. And, really, a simple red flag thrown to distract from the real point...
Secondly, the very idea that a 76 PSR would NOT be profitable is extremely surprising from any Yamaha fanboy... after all, EVERYTHING that Yamaha makes is by far the BEST thing on the market, isn't it?
And as Yamaha would have NO R&D costs to make it, simply tooling up a 76 and a slightly larger case and then putting in the exact same electronics in the S910, it would be Yamaha's least expensive option of all...
Thirdly, once again, the idea of the weight of it is a falsehood, and a distraction. Roland made a 76 with speakers, and a build quality quite a bit higher than the PSR's, and it came in at only four pounds more than an S910...
The dominoes keep falling....
The ONLY reason Yamaha have to NOT make a product that quite a large percentage of SZ's members would buy, remains that they don't want what would be a VERY superior product to anything they currently make in a 76 scavenging sales from the other divisions somewhat lackluster products. There is no doubt in my mind that a 76 PSR would sell quite well (how could it NOT, being a Yamaha?
). But, in fairness, other than those of us with other 76's from other manufacturers (and we are by no means as small a percentage as you think) the majority of sales of this great product would come at the cost of Yamaha 76 arrangers from the division that gets short shrift from the arranger division, currently...
The demand IS there. Can Yamaha overcome their corporate structure to offer it, though? So far, it doesn't seem so. And that is COSTING Yamaha money, not making it for them...