I can't speak for the people who make the purchasing decisions, but in the meantime you can simulate a log-taper pot by putting a fixed-value resistor in parallel with the wiper. You actually get a square-root curve, but if you choose your values properly you can get a good approximation of a log taper.
This page has a good discussion of the principle: http://sound.westhost.com/pots.htm
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.