Often we listen that the rich uses loans to develop a business and it is done with full risk. But the important lessons we get they take loans for things that are far more productive compared to some people only use loans just to fulfill lifestyles.
That's the point, we can't say that wealthy people are not smart but they just use debt because you can't use debt in a good way if you are not smart. Only people who are smart and have sharp minds can take loans and use those loans in the best way possible so that they can generate way more money than they have borrowed and repay the loan with interest before the repayment date, that is how you build your credit score and get bigger loans next time and rich people do that exactly.
Those who are not smart can't become rich because even if they take loans and debts, they won't be able to use the money in a good way to start businesses or expand existing businesses so that they can get revenue enough to repay the loans and have good credit score for future endeavors.