I think it's just a matter of opinion. I've used both O365 and GSuite extensively at different jobs, and after the initial switch, they are not too different, each has their annoyances, but I don't see a major change in productivity or quality of output between the two.
In my business I like the option of sharing a .docx or .pptx and not having to ask a client to use google docs to view stuff. But when I had google docs, I made it work. I agree with the root comment that MS is much more business oriented though. At the end of the day, Google's "products" are still just a ruse to sell ads, so they don't have the institutional focus on solving business problems that MS has (not that MS is in any way perfect)
Lots of horrible-to-use software is extremely successful commercially. This usually happens when users of the software are not the ones making purchase decisions (SAP) or if there are strong network effects (Windows).
In my business I like the option of sharing a .docx or .pptx and not having to ask a client to use google docs to view stuff. But when I had google docs, I made it work. I agree with the root comment that MS is much more business oriented though. At the end of the day, Google's "products" are still just a ruse to sell ads, so they don't have the institutional focus on solving business problems that MS has (not that MS is in any way perfect)