There are total 2 genres of Professional Video editors, AVI or Mov
1) Mov based (sometimes called quicktime based)
2) AVI based.
The end. Nothing else.
A "mov" file is preferred since it is multiplatform, has excellent timecode support, colour correction layers, anything you can imagine on a single file.
When professionals speak about Mov, they are not speaking about the Mov files you see on Net. They are speaking about Terabyte level, uncompressed, RAW videos with seperate timecode track and insane levels of audio channels.
So, if you suggest VLC to them, you make VLC look funny.
I tell you the camps.
AVI Camp: Adobe Premiere Pro, Video Toaster (aka VT). Video Toaster is generally preferred by news guys. Premiere Pro is... Anyway, lets not make its fans mad.
Mov (Quicktime Camp): AVID, Final Cut Pro (Class A TV series like HBO stuff, blockbuster movies, independent movies)
If Apple does end user consumer jokes on Quicktime Framework like that, your TV station or favourite movie director/editor gets hit.
The issue is, those ex-Linux "I know c++, look at my Stanford diploma" guys Apple hires. They have no experience with professional production workflow, they don't know what it means to check a 2K/4K file every 10 min. How would they seperate the file and figure if it is professional or end user? Even size check would be OK yet alone there are hundreds of quicktime headers to give the clue.
OS X is especially preferred on very high bandwidth (2K/4K) projects because you don't have to run a online (e.g. check written files) antivirus, you can disable journaling. Why? Because on such projects, you are at limit of bandwidth current storage technology provides. Read a file every 10 min to check? You can't enable journaling because of 5-10% overhead! You can't run antivirus.
We speak about an industry which ATTO SCSI/Fiber cards having their own CPU is used to handle the storage.