As discussed at the meeting Tuesday night, Llama 2 is not Open Source. It conforms to neither the OSI Open Source Definition nor the FSF Four Freedoms.

This post from IBM explains how and why it's not:
https://www.ibm.com/topics/llama-2#Is+Llama+2+open+source?

While the license is broadly open, it's not open source or free software in much the same way as the Creative Commons "NC" license is not; it restricts use and requires certain entities to get a paid license.