Marx wrote a famous piece called "Fragment on Machines". It actually predates Capital volume 1. He talks about the mix of knowledge and labour to produce machin

Marx wrote a famous piece called "Fragment on Machines". It actually predates Capital volume 1. He talks about the mix of knowledge and labour to produce machines that are capable of transforming nature (doing labour). From here, Marx explores a world where labour can be produced entirely (or almost entirely) by machines, for him machines are capable of undoing capitalism. The so called post-scarcity society. I think the key part here is that software is actually capable of replacing large portions of labour; think about how much book keeping work is saved through Excel. But what happens when capital owners own all the machines, what happens to people? This is a fundamental problem that Marx explores through out his whole work. I think OSS is actually what machines should look like for Marx, available for everyone at the cost of production and upkeep of the machines which in our case is the cost of copying and storage of the bits that compose the software. But Marx through out his work also explores deeply the relationship between labour and capital, and obviously producing machines requires labour! I know you're probably joking, but I we can learn a lot about OSS from Marx. I mean, a big part of Stallman's philosophy behind the free software movement is inspired by marxist ideas.