OP, OpenSearch, OpenTofu all seem to indicate the jury is still out on this one. I still see many smaller projects using open core. Three I started using recently ( llama-index, langfuse, qdrant ) are in this category.
There is certainly a difference between AGPL and BUSL style licenses. One of the new projects I'm using as some of their code with a BUSL style, but still open core primarily
Personally I prefer the Adam Jacob trademark business model but it's not that proven and it can't be retrofitted.