It's not due to bifurcation. It's because Apache "adopts" products that are created independently by other companies who then want to open source their product

It's not due to bifurcation. It's because Apache "adopts" products that are created independently by other companies who then want to open source their product, and leave to it someone else to look after. Kafka was created at LinkedIn and eventually donated to Apache Foundation. Pulsar was created at Yahoo and eventually donated to Apache Foundation.