There are plenty of people who were in industry and were forced out because they could not adapt to more efficient tooling to keep their jobs. Those that learned on ASM and Fortran may not be adapt for a world of prebaked containers and building everything out of node plugins that do the work. Even less are they suited to training heuristics for genetic algorithms that implement some of our most sophisticated software projects like speech recognition or vision.
By comparison at least those with money have saturated their demand for lawyers. Law is a particularly targetable field since its often considered overhead or expense.
Your only argument is stating that the demand for lawyers is saturated. How is that different from saying the supply curve and the demand curve cross? This is about a shift in the supply curve. The whole point of the previous comment is that AI-assisted legal counsel will be much much cheaper than it currently is. That means people will quite likely want more of it.
Even if the process of checking the contracts is fully automated, there's still a role for an associate/paralegal level lawyer (overseeing many more contracts than their predecessors) to answer followup questions, because their clients aren't going to navigate through case law summaries to get a more thorough explanation of non-standard term 3.1b's applicability to their specific situation if they can still phone somebody with a law degree.
[0]. https://en.wikipedia.org/wiki/Principal%E2%80%93agent_proble...