Indeed - he who pays the piper!
It's a fascinating subject though and it reminds me of the argument I once discovered was going on with regard to some wind instruments in relation to the use of exotic and endangered tropical timbers.
I'll start another thread.

I hope I am not doing Yamaha a disservice Martin but I don't believe any top professionals would be choosing them. Most of their instruments are aimed at beginners all the way through to advanced amateur use but not really the pro market as such. We have a Yamaha clarinet and piano, both lovely instruments that should take my son through to Grade 8 if he wanted to go that far with them. I've never seen a Yamaha piano on a concert stage.

Yamaha violins range from around £300 to 5K for the top model. I've no idea whether orchestral players might use the top model but I am pretty sure that they wouldn't be anywhere near good enough for pro soloists.

Here are two of the top contemporary makers.

josephcurtinstudios.com/ - base prices start at $44,000.

Or these, 'Zygs' starting at $55K - hub.aa.com/en/aw/sam-zygmuntowicz-famed-17th-century-violin-maker-emerson-string-quartet

Yes to be clear I should have said I've never seen Yamaha pianos at classical concerts ...