Its not a rip off, its just a very generic name. Tons of products do this, I assume because its relatively safe play when you can't (or don't want) a more standout branding.

More like a straight rip off of a first grader’s math textbook.

Microsoft also likes to add 365 and Live to their product names, and (to me) seems to be moving away from using One in new products.

https://en.wikipedia.org/wiki/List_of_Microsoft_software

Strange analogy, surely it would have to be ripping off a product called ‘Microsoft One’

and Microsoft OneDrive

at least they didn't go from Google (v1) -> Google 360 -> Google One -> Google X

“One” is very trendy right now.