Possibly. Past vintages have done so--The Whisky Exchange, for example, has a 1966-vintage 18yo for sale for £650.00. But you know what the brokers say--past performance is no guarantee of future returns. It's only worth something if someone is willing to pay for it, and the fact is that there are more and more bottles being salted away by more and more collectors, in anticipation of increasing value. The result, in theory, is much slower growth in value, or none at all for many, many years. In the event of extreme political, economic, or social turmoil, your bottle may be worth zippo. But at least you can drink it before a roving band of cannibals overruns your home and has you for dinner.
In my opinion, the experience of drinking it has value that can never be taken away from you.