I subscribe to Derek’s opinion.

10,000 traders running the same strategy would all buy at the same time and price, thus making liquidity insufficient and pushing prices up. Who would sell if the winning strategy says it’s time to buy?

Also, as for paintings, they are invaluable as long as there is only one of them. Everybody having a Holy Grail in their hands would only prove either it does not exist or it is not the Holy Grail!