Why can't wealth be created? Value (of which wealth is a store) is entirely subjective, and is not at all a zero-sum game. If John Lennon wrote a poem on a she

Why can't wealth be created? Value (of which wealth is a store) is entirely subjective, and is not at all a zero-sum game. If John Lennon wrote a poem on a sheet of paper just before he died, that paper would now be worth a vast amount of money. Considerably more than the 1c value of the sheet of paper alone. Nobody had to pay anything to create that poem. Bitcoins are currently valuable, precisely because (and frankly, only because) people put a value on them. That means that if I'm willing to spend $400 on a Bitcoin, and someone is willing to give one to me at that price, that is how much it's worth. That single transaction may be zero-sum, in dollar terms, but next week I might sell the same Bitcoin for $500 or $300 in another (dollar-terms) zero-sum transaction. The Bitcoin is the same. The price (value) is all that's changed. Just like the price of the sheet of paper containing John Lennon's last poem after he wrote on it.