[alkonaut]

Everyone can produce _something_ they have written. Yes there are people who literally clock in at work and code 8-5 for 10 years and never touched a hobby project or contributed to an OSS project. And you might not want to filter that group out completely. But if I was in that group and I was considering switching jobs, I'd definitely make sure I had some of that proprietary code stashed away so I could show a potential future employer. Yes you won't be allowed to do that. And it would be understandable if in some cases (like you work as a defense contractor) it's completely impossible. But for most people it should be possible to show something.