If you dont want corpos to exploit it, you go with GPL. Then they are forced to share back.

That license looks like Creative Commons Non-Comercial, which is not an open source license.

A good blogpost on this: The Enclosure feedback loop

When everybody uses AI to search, it becomes a closed system that holds all info. Doesn’t need to be productive, but it gatekeeps the knowledge that was free on the internet. It’s a self-reinforcing loop.