One could argue that personal income is also a kind of "revenue", since much of it is spent on taxes, cost of living, etc. I think the two are analogous.
I made $700k on the deal, not bad. I moved more than half a billion. The _revenue_ number is huge but mostly irrelevant from my personal perspective. Almost all of it was money that was never mine, that I never made.
In the case of companies, it can also show how much of the market a company has captured (when revenue == sales).