As far as I know, open file formats have become the standard for basically all industries and types of files. However, some of them, like the Microsoft Office Formats, are still proprietary.
I have seen Open Office documents and Ogg being recommended for Office documents and audio files, respectively, but I'm somewhat confused about other types of formats like video.
Video is a can of worms. Video files have the concept of a container (like .mp4, .mkv) and codecs (h.264, h.265). Making it worse, you also have embedded audio which has its own codec (mp3, ac3, aac, ogg, flac).
For me, mp4 container with h.264 video and aac audio have the widest hardware support- videos encoded that way pretty much play on everything and well.
It’s going to be a couple more years before good hardware support for h.265 is ubiquitous. I see .mkv with h.265 used a lot for 4K stuff, and while well supported on desktop, device support is still spotty.
I agree. One day we’ll hit a point where no matter how much money you toss at it, it wont get much better and at that point, open source will catch up, and then companies will opt for that because it’s free, until then that license gets you x% better quality/byte ratios, it gives your company and “edge” to go all in on it.