BWV said:
I think you are missing the fact that a stock certificate is an ownership claim on a set of productive assets. If I own a share of Exxon stock then I own that percentage of the company's net assets - if, all else being the same, no one wanted Exxon stock and the share price fell to few pennies, then someone could buy up all the shares and for a small price own a company that generates billions in cash flow every year.
That argument was made before in the thread and I replied to it. If you exclude dividends, by owning shares of a company, and in a way that it doesn't allow you to control the company and therefore get the profits from the company by other mechanism than dividends (that doesn't happen in the stock market, that's a takeover) you don't own anything of the company. If you have 10% of the shares of a company, can you sell 10% of their capital? Can you even sell anything that the company owns to make a profit? You can't, because you don't own anything of it. So how is that claim on the company's assets going to give you profit if there aren't dividends?
I don't have to give a counter-example, because what he's talking about is a take-over and stocks with voting rights, not the usual preferred stocks that are traded in the stock market.
I'm going to put this in more concrete terms:
If I define profit of an investor as money spent or received in the stock market, if I buy $1000 of a stock my profit will be -$1000 and the profit of the seller will be +$1000. Using that definition it's obvious that it is going to be a zero-sum game in respect to the profits. Even though this definition can seem strange, it comes from the fact that shares only have value if anyone wants to buy them. So when you buy $1000 of shares, you just lost $1000, which can be regained or not in the future.
If I define profit of an investor in a given trade as:
In case of buying, profit = 0.
In case of selling, profit = Price that the investor sold the stock - Price that the investor acquired the stock
This is the usual and intuitive definition of profit.
Now imagine that a stockholder X has 100% of all the preferred shares (no voting right, therefore no other mechanism to get money from the company other than dividends) of a company. That company has 10 shares of $10 each (for sake of simplicity). Let's say this system has $1000 and investors X(which is the current stockholder) and Y.
Balance of X = $0
Balance of Y = $1000
Now investor Y acquires the 10 shares for $100 each.
Profit(X) = 10*$100 - 10*$10 = $900
Profit(Y) = $0
The investor X now has $1000 and buys all the shares to Y for $70 each.
Profit(X) = $0
Profit(Y) = 10*$70 - 10*$100 = -$300
Now Y has $700 and X has $300 in his balance plus all the shares.
Total profits of X = $900
Total profits of Y = -$300
With profit defined like this, it's easy to show that the sum of the profits of the 2 investors can never be greater than $1000.
X balance = $300
Y balance = $700
Money that Y has in its balance + Money that X has in its balance = $700 + $300 = $1000.
Variation of X balance = Final value - Initial Value = $300 - $0 = $300
Variation of Y balance = $700 - $1000 = -$300
Sum of the variations of balances = $0
Conclusions: The sum of the money in the balances of the investors is equal to the money in the system. From that it follows that if the money in a given system doesn't vary, the sum of the variations of the balances of the investors is always $0. If it varies by an amount Δx, the sum of the variations of the balances of all investors will be Δx.
For a given system, the stock market is a zero-sum game in respect to the balances (which is what's important after all, because it's the money investors actually own). In a varying money system, as in a real scenario, it's not a zero-sum game, but there isn't any creation of money either (just like there isn't energy creation in an open system). In other words,
what one gains, came from another one's pockets, which was what I was attempting to argue, although with wrong terms.
This could be proven for the general case, if any of you has the patience go ahead 