Every one of those demos brings at least 100 peoples sells about 10 tyrosses directly and another 20 or so in the next few months to follow..
Are there that many arranger players in your neighbourhood interested in such an expensive arrranger?
There's not a chance in hell Yamaha is selling 10 Tyros 5's to every 100 attendees of each demonstration. They'd be lucky if one in 100 purchased one. Fact is the market for TOTL arranger keyboards is minute. Even more so once the price is beyond $3k. At $5k and beyond you've narrowed the field to such a small niche that only a few people will buy it. Even TOTL workstations which have a much broader market don't sell in huge numbers. We're not talking hundreds of thousands of units, a runaway hit would be in the tens of thousands.
As proof see spaldings story
The market for these totl arrangers is totally different overhere in europe then in the us.
Keep also in mind that most of the potential buyers come from an organ background, which makes adding 2k € for a new system not such a big ammount.
Even buying a new one for 4k is for most of these people affordable.