They're not wrong. When I build something, it's mine and I control it. I get to learn about all sorts of interesting stuff, making me a better programmer in the process. If I publish it on GitHub, it becomes résumé material, helps other people and might even start a community if enough people start contributing. I get to contribute to the state of the art in free computing, advancing it not just for myself but also for everyone else.

If I pay for something else, I don't get source code, I get borderline malware that spies on me constantly, I'm subjected to idiotic non-negotiable terms and conditions and I'm at the mercy of some gigantic corporation that can kill the product at any time.

We don't pay for "something better" because it's not actually better at all. We're not laymen, we actually understand the fact it's a shitty deal. We're not some mindless consumer companies can just dump these products on. We have the power to create. The more we use this power, the better off we are.