I think it depends on how the feature is used? I see it as mostly as yet another user interface in most applications. Every couple of years I keep forgetting the syntax and formulas available in Excel. I can either search for answers or describe what i want and let the LLM edit the spread sheet for me and i just verify.
Also, as time passes the OpEx and CapEx are projected to reduce right? It maybe a good thing that companies are burning through their stockpiles of $$$ in trying to find out the applicability and limits of this new technology. Maybe something good will come out of it.
That would move the cost of running the model to the end user but it would also mean giving up all the data they can from running prompts remotely.
It would probably also make Office users more productive rather than replacing them completely and that's not the vision that Microsoft's actual customers are sold on.