I suspect we’re confusing two or more concepts here - publicly traded companies versus corporations with a single majority shareholder, and perhaps more, like small and multi-generational family businesses.
In most of those circumstances, “installing the boss’s kid” isn’t “nepotism”, at least not in the common usage of the word. Giving a business to your children is not favoritism because there is no reasonable expectation for it to be based on anything other than the owner’s will.
That point aside, I think my first paragraph illustrates a big barrier to discussion on this topic. It seems like many commenters here are envisioning a multi-millionaire setting up their kids with huge trust funds and giving them a “no-show” job on the board of one of more public companies. Others are envisioning a small family business being passed down between generations.
This is one of those situations where both sides are correct. The legal structure for a huge corporation isn’t that much different from the construction contracting company down the street. Especially in cases where the business requires a lot of capital investment (like construction or farming), a relatively small family business ends up falling under the same laws as the giant company.
It’s one thing to say that the giant company should come with a 15% tax passed on to an heir; it’s quite another to say that the family business should. In many cases, the family business simply doesn’t have enough capital on hand to absorb those taxes, and the only resort the heir has is to liquidate all or some of the business to pay them. This means that small, well-run, multi-generational businesses are damaged or even lost completely.
At the end of the day, the effect is regulatory capture. The owners of those giant companies hire accountants, take advantage of the tax code in every way they can, and just plain have enough cash on hand to make this a non-issue. The owners of the smaller businesses don’t. Over time, it means that the larger a company is, the less competition it faces.