Many years ago, I heard the story of a man whose business partner did dirty. They were business partners for almost 5 years and the suddenly the business partner left with company's money. Even after several years, this man didn't recovered. He ended up sounding it as a warning to his kids never to go into business with anyone. The trust was destroyed and never recovered. This is just one of those sad stories.
Currently I'm still running a small business with my friends, there are levels of ups and downs when doing business with other people, both bringing money and being lied to about sales results. The mistake is not in the business we are in, but we are working with the wrong people, you need to verify who your friends are in business and what their background was before.
On the other hand, there are many success stories of friends who went into business together and succeeded to together. If you have ever gone into business with a friend, what were your biggest concerns and how did work through it.
We made an agreement at a notary as an effort to ensure that the business trip we worked on together, in the agreement we made was witnessed by the families of the three parties, so that if something goes wrong we will sue civilly and criminally. Until now there have been no obstacles in the small business that we manage with three friends and every year we get a fair share of profits, because in the agreement at the notary we have made legally binding rules, both the initial capital and profits.
But I agree that it is not advisable to do business with people whose origins have not been verified and crimes are usually committed not on purpose but because there is an opportunity. So try to be more selective in choosing business partners.