Privacy is the top one concern for Series B+ companies from my experience. On the other hand, if the LLMs need to run on a developer laptop you should choose small open source models which usually don't perform well. My experience with llama 8b was negative.
For individuals, we have an online Anon solution with privacy by design to help keep your data safe up to some extent. Series B+ companies might want to try our on-premise solution that keeps data locked down tight within their own space. No worries about your data leaving your control.