"The problem is that age-labeled single malt Scotch has always been, by design, a limited commodity. Distillers produce a set amount in a given year with pretty much zero visibility about what demand will be like when the bottles start hitting venerable ages.

The shortage of old and rare single malt ... has already started, and it's going to get worse," said Rickesh Kishnani, who launched the world's first whisky investment fund."

Source: http://money.cnn.com/2016/03/04/luxury/global-single-malt-scotch-whisky-drought/index.html