That’s disgusting. I would argue two things need to happen across the board:
Companies need to collect IRL data if you want to have access to text/voice chat, verify them, and in situations such as these, hand them to the authorities. Yeah it’s a tricky data protection problem, but these would be legally actionable threats IRL, they should not be let off the hook just because it was done online.
More importantly, companies themselves should be on the hook for failing to act. That is, if you want to provice text or voice chat or something, but also do not want to invest enough money to moderate these spaces, then you should be legally liable under the same logic as why the cases should be given to the police in the first place, you’re aiding and abetting such threats. I suspect we’ll very very quickly either see way stricter moderation (good) or the end of text/voice chat in many games (not ideal, but if they cannot be moderated, then so be it).