I don't think I fully get your point, but what I know is that no one can actually be wealthy without investments. It doesn't matter what you do, as long as you're starting small, you need to have an investment if you have plans to be wealthy one day. You have to put your money to work for you.
The investment can be in any form. It can be in the form of a business, a financial investment or real investments; what matters is, you have to put your money to work.

If you earn money, even if it's a lot of money and you don't make that money create more money for you, then it will surely run out, but even if it doesn't, you won't be wealthy.
You see footballers, basketballers, artists, and actors looking for ways to have different businesses and have different investments, even though they make a lot of money, because they know that without investments, they will just go back to the bottom with time.