So have countless others—and failed. You only hear about the ones who win. And you mentioned expense—they had the money to begin with, and turned it into more money. To have that first seed, that's luck of who your parents are and where you're born. Do you think the sub-Saharans starving to death stand an equal chance of succeeding in the world?
Fred Smith (of FedEx fame) once gambled his entire cash on hand on a blackjack table and won, saving his business. It doesn't mean that gambling is going to make you rich.
And yet Fred Smith would have failed that go around had he not done it. But he would have been back at it again had that bet gone south. Just taken longer. You have to take risks, sometimes big risks. Bill Gates, a nobody at the time, sold IBM an operating system he didn't have. It was a bold risky move that paid off.
I've worked my ass off and started with very little but somehow was able to achieve moderate wealth starting my own business. No money from anyone to get going. Lots of businesses have been started by people with little money. Go read the founding of Carl's Jr. for example. There are many stories like that.
The key difference is you have to go do something towards achieving your goals while trying to survive to get a foothold. Sometimes you fall down, you have to get back up again. Those who wait for opportunity rarely get it. Those who keep trying, often failing multiple times along way, are the ones most likely to succeed. That isn't luck. It is persistent hard work while not giving up when things are bleak.
You could say fishing is luck. But the fact is, if you don't have any hooks in the water you won't catch anything. You have to keep on trying.