How do we limit LLMs potential risks?

I've seen evidence that young users who interact with AI chatbots develop quasi relationships with the AI. This sometimes leads to self harm or other negative outcomes. What are AI developers doing to prevent friend-like or emotional based relationships with their users?

https://www.npr.org/sections/shots-health-news/2025/09/19/nx-s1-5545749/ai-chatbots-safety-openai-meta-characterai-teens-suicide