[nemothekid]

If they were actual enhancements, I doubt the Zig Foundation would care. A company making a closed source release doesn't seem to be the point of ire here.

The issue is, another company has forked Zig, made 0, or negative enhancements, and the Zig foundation is making sure to distance itself from the fork incase anyone gets burned by Zen. You don't want the first impression of your new language to be tarnished by some commercial company who dumped everything in marketing and 0 in development.

The GPL wouldn't help in this case at all. It's very clear that the Zig Foundation doesn't care about the changes, it cares about it's reputation. On the contrary having a high quality commercial fork would probably be a good thing for Zig (see MySQL <-> Percona, Cassandra <-> Datastax, Postgres <-> Citus)