I cant speak for anyone else but there are some serious challenges when trying to build something like this in a country you are not from. You dont understand laws, customs, or anything of that nature where you are going. You dont speak the language so a proper labor force and contact with contractors can be a pain. Trusting your multi million dollar facility in the hands of locals is a scary proposition, and living down there or spending massive amounts of time down to secure the facility would be pretty terrible considering the distances involved. There are obviously a number of other socioeconomic issues to deal with as well.

For example id shy away from ANY and ALL soviet bloc countries such as Uzbekistan based on the current political climate and the issues we have in the US with Russia right now. I would also stay away from South America as a general rule because of the massive amounts of corruption, struggle, and strife South America seems to constantly have. The US border crisis is in no small part due to the mass exodus of people in South America trying to come up this way through Mexico.