Biological products have a serious habit of degrading over time. It is highly unlikely that they will be able to match the long term durability of PVC even if they can match the sound quality. Getting the industry to switch from something they are so comfortable with would also be a problem. Records, even in their hay day were not near the largest use of PVC. Now they might represent less than 1%. Think plumbing. If you want to make a real contribution to the planet's health think Molten Sodium Nuclear Reactors.
