Maybe the policy is that you can’t just release 20% time projects publically?
1. Any work you do during company time/resources/equipment, is company property.
2. Anything public related to work, or that could be considered as competing or providing the service in the same space as work, needs to be vetted by the company.
Along with public communication, etc.
In my experience, this isn't some "what happens when MBA's run company" or "they run out of ideas", it's literally every company I've ever worked for.
Was google previously an exception here, or are people just unfamiliar with the details of the 20% policy? Surely they didn't allow you to work on, for example, something for a competitor? There had to be some limitations, rather than a pure free for all, as seems to be suggested in the comments.
Interesting. Did they read their contract before signing it?
This isn't unique to Google. It's basic common law. No contract needs to be signed. Competing with your employer is immoral. If you want to compete then quit and be a competitor. If you're taking their money as an employee then you have a "duty of loyalty"
I saw this play out repeatedly with OSPO and saw many people who believed they had set up firewalls to allow this, and I understood Google's position and appreciated that they made it fairly easy for most people to open source their code.
If I released a tool personally that I hadn't told anyone at work about and put my company's logos all over it and it went insanely viral then I would expect an extremely uncomfortable conversation with my manager, his manager, HR, and at least one lawyer.