See, let's take a look at this page.
Says,
The noun revenue can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be revenue.
So the noun revenue is either countable or non countable.
And interestingly, it says,
However, in more specific contexts, the plural form can also be revenues e.g. in reference to various types of revenues or a collection of revenues.
So in case company A produces items A and B and C and each revenue is recognized individually and respectively, it would mean, like, Revenues. A 100 millions, B 150 millions, C 200 millions, would be reported in financial statements? I guess the quote would be saying so.
Thank you.