I don't think people realize how important incremental improvements are. Before open-source software took off, everyone either licensed a proprietary library or

I don't think people realize how important incremental improvements are. Before open-source software took off, everyone either licensed a proprietary library or invented an ad-hoc solution. If the proprietary library was discontinued, you often couldn't extend or improve it (and even if you could, you couldn't share your changes), so you started over, either from scratch or with another vendor redoing the same work. This is also why we have so much e-waste: once a manufacturer ditches a product, its usefulness is permanently limited, both by law and practicality. Copyright expires eventually, but so far in the future that we'll all be dead by then.