Have you seen the license of llama models from Meta?

> 2. Additional Commercial Terms. If, on the Llama 2 version release date, the monthly active users of the products or services made available by or for Licensee, or Licensee's affiliates, is greater than 700 million monthly active users in the preceding calendar month, you must request a license from Meta...

ref: https://github.com/meta-llama/llama/blob/main/LICENSE

But again, not open source...