Seemingly, it's to encourage people to start a company, because it's so easy now and you can get rich (look at all these people in the top 100 that got there by starting a company!)
But I'm not sure looking at the top 100 is a compelling argument. That's for the 0.0001%. How does the top 10% do? The top 25%? What about the median outcome?
More than that, what are the trade-offs? (hint: https://danluu.com/startup-tradeoffs/)
Now, I'm all for encouraging people to start their own companies. But this just strikes me as a not very good argument for it. Hell, using similar logic, there is a better case to be made to buy bitcoins and HODL (everyone that bought in 2012 an held made 1000x return!)