How do archeologists solve the survivor bias of the "Out of Africa" theory?

After all, if humans were randomly distributed on planet Earth according to the local environment's carrying capacity, 100 000 years later Id expect to find a lot more human remains in Eritrea than the Pontine marshes.

Archaeologists don't, human origins is the domain of anthropologists. There's some overlap, but they're different professional specialties.

Anyway, multiple concurrent lines of evidence. You're morphologically similar to ancient African ancestors. The serial founder effect points to Africa. Molecular clocks point to Africa. Fossil evidence points to Africa.

Anthropologists don't think anatomically modern humans originated exclusively in the places with the most fossils though. That's just where we find the most fossils.

Bodies in certain environments (e.g. especially some bogs/marshes) are much more likely to be preserved? On the other hand it’s extremely unlikely for human remains to survive for long in tropical forests or similar places.

Cleveland Public Power rates online are <$0.10/kWh in the summer and <$0.05/kWh in the winter.

Probably about the same as we have.

Higher frequencies have terrible transmission (skin effect, transmission line length limit) and would start to interfere with radio.

Lower frequencies need larger transformers.

DC while nice is too expensive.

So about where we are now.