For my use, there are 3 apps that I use in MS Office that keep me hanging on to that vs other options. First, Outlook...it’s just less painful syncing of work email, contacts, and calendar to all my devices. Excel because of its wide range of usability, from easy to pretty complex tasks, so that work can be shared with others of different levels of skill. I’ve had some large sheets in Excel but nothing like 3000 x 10,000. OneDrive for keeping work stuff where I can work on it wherever. There are other options for all of these, but for the price and user experience, they are just hard to beat. The other office apps aren’t clearly better to me than alternatives, I use them only because they are with the suite.
My first piece of bought software that I used on a PC was Lotus 1-2-3, later added dBase. Those 2 programs, along with WordPerfect, changed everything for me. MS Office just won me over, along with the masses, with its more refined user experience. it’s not perfect, but all-around great product. Glad they are getting it all Mn native. But, then I’ve never used Teams…so I curse less than some ?