[nonameloser]

having money is a sign of being productive, on the whole

[Gud]

Having money is a sign of being able to extract wealth from the current economic system. I know many productive people who never learnt that hard work doesn't equal good money.

[BobaFloutist]

It's actually typically a sign of your parents having money, above all else.

[marcusverus]

People who know how to make money pass this knowledge on to their kids. People who don't, can't. This shouldn't be surprising.