At a guess, the rasta concept of returning to 'Africa' is as much about returning to a pre-colonialism, pre-slavery, pre-capitalism, spiritually uncorrupted state of being as it is about upping sticks to Addis Ababa.In roots reggae there's a whole load of songs about wanting to go back to Africa - why did these people not just get on a plane and go? Or am I being really culturally insensitive or something by even asking this?
Plus, most Jamaicans cant afford to fly anywhere
There is a Rasta camp in Ethiopia, which has, iirc ex-pat Jamaicans living there (can't remember if they set it up).