All software products are identical in the sense that they consist of instructions, lines of code or technological recipes, if you like. And like recipes or formulaes their services are inexhaustible. The vital point is that once they have been produced there need virtually be no further production costs, meaning that marginal costs will be zero. As we can see, there are no longer any production costs. The only costs were in development and they have now passed away.
Bygones are always bygones.
Let us also assume that this software becomes phenomenally popular, as did Doom, with hundreds of thousands of net users downloading it every week. Of course not. What these users are doing does not differ in principle from millions of students copying out Pythagoras' theorem. Downloading, therefore, is a form of copying. Staggered by their success our programming enthusiasts develop a compression algorithm that is superior to anything on the market.