These are academics. Not to disparage them or their work at all but it is very different to the transaction or litigation work that is done in BigLaw. It is a lot more focused on analysing and summarising existing texts, which are themselves more easily available for LLMs to train on (statutes, case law, legal journals, textbooks). As such it is probably the easiest legal work to LLM-ify but also the least valuable, because I assume law professors aren't getting paid nearly as much as BigLaw lawyers. So this approach won't scale. Not to say AI won't crack BigLaw but it will be a different challenge.