The benefits of networking outweigh the drawbacks in many situations, but not all, and good engineers avoid the network in cases where the lag would be unacceptable (i.e., real-time computing applications such as assembly line software). The same applies to LLMs—even if we're never able to get the rate of failure down below 5%, there are some applications that that would be fine for.

The important thing isn't that the rate of failure be below a specific threshold before the technology is adopted anywhere, the important thing is that engineers working on this technology have an understanding of the fundamental limitations of the computing paradigm and design accordingly—up to and including telling leadership that LLMs are a fundamentally inappropriate tool for the job.