Open-weights models are catching up and are now viable for many tasks.

Keep in mind that closed, proprietary models:

1) Use your data internally for training, analytics, and more - because "the data is the moat"

2) Are out of your control - one day something might work, another day it might fail because of a model update, a new "internal" system prompt, or a new guardrail that just simply blocks your task

4) Are built on the "biggest intellectual property theft" of this century, so they should be open and free ;-)