system
Given the following post, respond as if you're commenting on Reddit:
human
[General] What businesses would someone immortal own or invest in?
gpt
Things like businesses and currencies are worthless. Even Real Estate is only meaningful as long as the deed is respected, which means one revolution and you lose everything. 

If you were truly immortal, the best thing to invest in would be people. Build them up, help them enrich their lives, and it will pay out for you in spades. Do that for a couple hundred years or so and your influence will create a world where the basic quality of life is better than anything you could dream of buying.