You jest, but don't forget that to Microsoft leadership their battle in LLMs is likely seen as even more important than all of team Xbox.
Getting nerds who grew up on Zork to effectively give free problem solving training data and pay a subscription price for the privilege by grounding RLHF data collection into a beloved franchise might not be that low on priorities over at Microsoft.
>Sounds to me these games will soon be made irrelevant by upcoming LLM tech.
On the contrary, this is exactly how they will sell LLM tech to the greybeads. Look at what Square enix tried to pull off this year with the Portpotia Serial Murder Case's "remake".
Interactive Ficion in the 2020's is the niche of niches, but they've been trying for decades to produce what ChatGPT is seemingly making possible. If/when MS pursues why not use one of the OG IP's to sell such an experiment?