I can see both sides of this.
For a dealer, and would-be buyer of that piano, it can feel like people "free loading" an experience to play a very high quality piano, and if that piano's mileage adds up, it definitely feels "pre-owned" at that point.
For an enthusiast however, it could be an opportunity of a lifetime. It's not everyday you get to play, for example, an Hamburg Model D, particularly if you're from a place like the US. So it could feel like someone- a Steinway sales person for example- blocking them from an amazing experience đ