The problem is luck plays an enormous role in whether or not a company fails or makes bank. This is how we end up with idiots who become hundred-millionaires or billionaires. Though being savvy helps improve your chances.

If you’re good at playing the dailies, you will inevitably go bust, possibly while owning a bunch of rotting commodities that didn’t sell in time, but once you have a reputation friends will lend you money to get back on your feet (which you pay back with interest.)