You can be at the most normal job ever, like a family restaurant, and you may still find yourself being a victim of nepotism. Some brother, sister, or nephew appears in the shop one day, and suddenly they become manager and start bossing you around. They have been at the job for 2 months, and you have been there since the beginning. Nothing matters. They are close to the owner, so they get all the benefits without nearly doing any effort. They are just "lucky". Or at least that's what they tell themselves to avoid explaining that they just went over actually good employees and stole their benefits from them because they are family.
Hiring family is probably the worst thing you can do for your business. They may not work hard enough, and you can't say anything without creating a family feud. They may be dumb or awful at their tasks, and you can't fire them. And they may ask for a raise, and you have to give it to them to avoid more family issues. So why would somebody even do that? I get the whole helping out family. But there is a difference between giving someone you know a job and making them manager or giving them the best hours over other employees just because you know them. Like the people in the story below did.
When you manage your business badly and do things like prioritizing family members over great employees, you get a bad business. The family won't work as hard as any other employee. You will regret having hired them in the first place. And it would be too late. The great employees may have even left because you, the owner, decided that people who don't have any abilities on the job deserved better hours and positions just because they are family. When there was a great employee who did, in fact, deserve it in the first place. So next time you are thinking about hiring a family member, think harder. I promise you it's not the great idea you think.