Revenues in general suggest funds derived by a firms core competencies in their operation space. Axillary sources of revenue could include Income from Investing Activities, Income from the Sale of Property and so fourth. To suggest that there would be no organizational wide income at all within the next 100 years would be foolish.
Instead, why don't we focus providing Mammoth a platform to springboard off of. We could actually consider the big picture and the variety of business transactions that could and will likely occur to generate Income to Investors. We could stop making such unrealistic and unthoughtful posts. Yes, someone could put together a wonderful document in style, but the content can be lacking, so bias, or completely off base.
It seems we might have fallen into the mentality that making angry posts on an online message board would actually do something. If the intention is to educate investors, then we should do that in an educated and positive way.