Why do we see many more 5th and 8th freedom cargo flights than passenger flights? Usually, we can see many cargo flights operating between 2 foreign countries (and even as domestic flights within a foreign country in some cases). There are passenger flights that operate in the same way, but they are much fewer in number.
For example, this is an image of Fedex planes flying over Asia, and none of them originate/terminate at US:

But if you take any passenger airline, then it is very unlikely that they will have so many 5th and 8th freedom flights. Why do more cargo flights than passenger flights enjoy these freedoms?
So, what's happening here? Are cargo airlines awarded 5th and 8th freedom rights more easily, or do passenger carriers simply don't apply for them, frequently, or something else?
I think the answer is simply that Cargo is far less picky about how it gets to its destination, as compared to People. A pallet can easily take three different flights to arrive at it's recipient, whereas most passengers wouldn't tolerate so many transfers.
Fifth freedom cargo flights are also often irregularly scheduled. For example, Atlanta Hartsfield-Jackson Airport receives the occasional cargo flight from Turkish Airlines and Singapore Airlines. It frequently receives flights from Korean Air Cargo and Cargolux, but these often originate at a variety of cities, such as Chicago, Dallas, or Anchorage.
In short, cargo is more flexible, which allows cargo airlines to be more flexible.