So you don't, if you don't think you can outpace the productivity increase that my investment will have.
This is on purpose. I've heard the argument that there is a lot of time wasted by having everyone try to become an investor. Not everyone knows exactly what will and won't work.
Now if you don't work at all, this is a different problem. Now, you're looking at running out of money because you still have to buy food to eat and pay rent or buy a house or what have you.
Now if you own a business and you aren't looking at being more productive, now you're looking at the problem of more productive businesses earning money and nobody buying from your store.