There's a very long history of trying to establish merit-based selection of government officials in, e.g., china. That's not to say there wasn't a lot of nepotism anyway, but I think it's also undeniable that the state was trying to reduce it, rather than just accepting it as normal and unavoidable.

Nowadays I would also guess that the majority of people across the globe live in societies where nepotism is conceived of as bad. There might still be various amounts of it but people generally tend to discourage or punish nepotism when they can.