[falcolas]

> It is absolutely not normal to demand copyright for code written by a developer in off-hours.

In the US, it's the standard. There are exceptions, but most companies will demand it. I've been bound by IP assignment contracts exactly like this for my entire career - from Oracle to a pair of startups.

> sign non-competes saying they will not work on the project.

Also, in the US, this is a long-established standard. You will not work for your competitors. Zig is a competitor for Zen.

[Nullabillity]

Right, because Oracle is the gold standard for ethical behaviour.