Some wealthy people are smart but some are not smart, because when some of them borrow money and invest it in a business after making a lot of profit for them to pay back their debt, they will not rather they will keep carrying loans again and again, because they are afraid that if they pay the debt their profit will deduct.
and what will happen when the people decided to collect their money with force, the business will eventually collapse.
That's not how it works, you definitely lack knowledge in this area and it's evident from what you said. Rich businessmen believe that it's important to always have business debt or loans because that motivates them to keep building and upscaling their businesses to generate more revenue and be able to repay the loans, but when they repay those loans, they take more to build more and have more revenue, and this continues.
They don't overdo their loans so that they are forced to repay the money or their businesses collapse, they repay the loans that have reached the deadlines, and take new loans, and then grow their business again.
If you say that these people aren't smart, you are wrong, because being able to manage loans in an effective way is a smart thing to do and not everyone can do that.