I don't know if I believe either end of your posting here.
Regarding Yamaha, they certainly build quality products, maybe not the most inspired always, but typically very even quality. They also stand behind their products.
Now how you supposedly got a circuit board that costs more than the unit, plus free labour, on an out of warranty product is not a good business model.
I sell Yamaha products at the store where I work, and have no problem recommending them. They have well over 50% of the digital piano market, and probably well over 50% of the over $250 keyboard market. And the store gets almost no complaints on products sold.
Yamaha is the envy of the acoustic piano world, in that they build pianos that are the same from one to the next, and the Yamaha action is very good for the price. I have a 1974 Yamaha grand, that gets played most every day, and plays fine, and sounds good to boot.
Yamaha is now suffering the results of the tsunami. They do not get reliable power each day, all day. Plus some of their ICs are fabricated in the affected zone, so there are products that they cannot build, ship or sell.
About Fatar keyboards, you had this to say just 3 years ago on this forum,
Fatar keyboards . . . and fine keyboards they are!
and also, I ended up with a Fatar keyboard; and couldn't be more pleased with the result.
Now I can only surmise you have had some troubles with your keyboards, as you now call them Italian junk.
I would not call Fatar keyboards junk, however they do reflect their price point. They feel nice brand new, not so nice with constant use. Their switching is a greater problem. As a service person, I have worked on them, and they are not nice to work on. I find however, that in churches they are not used enough to give troubles, so likely they will be trouble-free for several decades.
A lot of what goes into digital organs (classical/church/institutional), is designed from the premise of how much can be given to be sold for a certain amount of money. Hence, a lot of questionable materials, components, modules, etc. are used.
Also, I think most builders do not build their products to exceed a lifespan of say 20 to 25 years.
It is true that Fatar is the default provider of keyboards for almost all digi-organ builders. I understand that Roland/Rodgers does not use Fatar anymore. Allen uses Fatar on all models with a "F" in model designation. The custom keyboard builders have very expensive products made in low quantity. And the quality is uneven on them. I have seen most everything out there, and choice is somewhat limited. Not many electronic organ customers are prepared to spend $2,500 to $3,000 per keyboard. So Fatar is the choice, as they can be installed at $500 or less per keyboard (unless one gets the wood core caps or wood playing surfaces). Even pipe organ builders are using Fatar keyboards when price is an issue.
I can't see any other outfit stepping up and try to build organ keyboards at this time. The market is small and shrinking - likely less than 20,000 keyboards per year.
If you think Fatars are bad, you should see what some of the Chinese made keyboards are like - real trash most of it.