Comment by foobarchu

To the average person, no. If you ask a regular user, you'll find that there is no alternative what Excel can do, the PowerPoint alternatives are missing loads of features, etc. Additionally, files created in MS Office still cannot reliably be used in the open source alternatives without something breaking. Until a non-technical user can open my PowerPoint presentation in LibreOffice and not have to apologize for the formatting, they aren't equivalent.

A huge part of this is fonts. Users prefer proprietary fonts, and when you open files using them in the alternatives it tends to look like terrible. You will not convince users that this is on them to fix, and to be honest they're right, it's not their problem.