There's plenty of viewers, I think even MS used to offer free MS Office readers.
We need interoperability between MSOffice and everything else. But were stuck with MSOffice because even the so called open format is not well documented.
MS Office is the last roadblock for Linux desktop. It's literally the last thing holding back many users from moving to anything else.
> MS Office is the last roadblock for Linux desktop. It's literally the last thing holding back many users from moving to anything else.
I think the last one has DRM shenanigans specifically to prevent it to run on Wine? Not sure of the legality of that regarding antitrust legislations but it seems that's what they've done.
So many things holding the Linux desktop back.
No support from OEM vendors to sell pre-installed devices on consumer stores, even if they do support it, it is a custom OEM distro, because differentiation, like on the netbooks, Android, or drivers tied to a specific Ubuntu release, with shovelware.
Games, no studio cares about Linux native games, thus Proton. Game studios keep happily using Windows, Visual Studio, up to Valve to do the needful, at least as long as current management is around.
Governments, plenty of jurisdictions still have software that requires either Windows or macOS desktop software.
And then we have the whole desktop fragmentation, that makes people don't care and ship shitty Electron apps or command line software.