Even if it gets 1 million subscribers, it would represent 0.1% of Microsoft's overall revenue. Software lawsuits can become multi-billion dollar expenses, and targeting Microsoft instead of random Copilot customer Bespoke Clojure Gurus, LLC will mean much larger awards in such suits. Why Microsoft would just volunteer for such a risk baffles me.
My confusion is more over the balance of revenue and expenses than just "derp, me no understand why do companies do things to make money, derp"