These products all have super deep feature sets. This might meet basic editing needs. There is zero chance they have replicated the full feature set. Word for example has a ton of functionality for lawyers.
I can tell you all of the Excel alternatives are extremely disappointing.
I guess you only need to get a list of the feature sets and then have an AI implement them (and follow up to test them and such)
I do agree with that but I also think ultimately that a copy with all the most basic features and the familiar UI is good enough for most users, certainly for me