If the above individual wants to see widespread corruption, you may want to check out some European Union countries that have this culture. Croatia is a good example, where nepotism is the modus operandi, as in whom you know will get you places in society. Bulgaria is also a great example.
When I think of a country like Croatia, I like to compare it to some locale in the US with a similar total pop (4-5M?). Things start to make more sense then, that's a smallish metro region where that kind of networking is more common.
It's pretty clear that a huge chunk of the US doesn't consider nepotism corruption, given the complete lack of repercussions to Trump for hiring his family into the White House.
Ever heard of the Pentagon? Here's a good start: https://www.thenation.com/article/archive/pentagon-audit-bud...
I will say that looking up the results of the more recent audits (2020), the summaries frequently talking about failing audits but also of uncovering zero evidence of fraud.