By all companies? I'd say less than 10% of all LOC today are generated by LLMs.

Really? In my bubble of internet news it seems the sheer number of companies that have formed and shipped LLM code to production has already surpassed existing companies. I've personally shipped dozens of (mediocre) human months or years worth of code to "production", almost certainly more than I've ever done for companies I've worked at (to be fair I've been a lot more on the SRE side for a few years now).