Does it really works like that? If I invest 200 million in an Australian Index funds I''m exposed to all risks/rewards that the Australian economy faces. If I

Does it really works like that? If I invest 200 million in an Australian Index funds I''m exposed to all risks/rewards that the Australian economy faces. If I invest 200 million in a greenhouse then I'm less exposed to all risks and rewards in the Australian economy (assuming that there's a weak correlation between the state of the economy and amount of Tomato's consumed, which seems reasonable) + all the risks in the Tomato business. Now, it might be easier to insure against Tomato specific risks but I still don't think that the Tomato business (as awesome as this greenhouse sounds) is a clear winner here.