Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Is the stock market a zero-sum game? 
Suppose everybody stopped all economic activity right now. No more work for others, no payments, no trade in kind or otherwise. Would average wealth stay the same? Of course not. Economic activity is not a zero sum game. Most of our economic activity is organized in the form of companies. If the companies manage to make more profits by doing useful things more efficiently, or when they find new useful things to do for profit, then not only the company's value grows but also the sum total of all useful things produced in the economy. That means it's not zero sum. When stock prices go up, that is often because the companies really have become more valueable.