Let's use a few sterotypes for examples: A hard working trucker will take years to set aside $10,000 in savings. An average programmer at a financial institution can do the same in months. A debutante able hire a stock broker to invest their slush fund can do the same in hours.
The trucker, in terms of advancement and opportunities, will probably max out at running their own owner-operator business. Maybe they'll get really lucky and be able to employ other drivers as well.
The programmer can probably keep raising their pay by hopping jobs every few years, until they can retire by playing the financial market with his savings.
The debutante just keeps being a debutante.
We could call the trucker the successful one - they ended up with their own business. And there's a cost, too. All of that long haul driving and manual labor moving freight has left them with severe, if managable, back pain. However in terms of capital, in terms of being able to pay for a loved one's fight against cancer, the truck driver isn't even a blip on the radar.