Of course not. But if we are talking about replacing JPG, two things are necessary: a new format should not be restricted by patents and licence fees, and such movement has to be coordinated with all other "players" in the industry. Apple did not do any of it.

But that isn’t true about HEIC. There isn’t a license fee.

HEIC is based on H.265, so there is a whole separate organization dedicated licensing and litigating its patents.

No? It’s an ISO standard that’s separate from H.265. Maybe you’re thinking of HEVC, which is like that. (Alternatively I’m wrong, which is totally possible)

HEIC is defined as HEVC in a HEIF container. So yes, it's patent encumbered.

Edit: https://en.wikipedia.org/wiki/High_Efficiency_Image_File_For...

I learned something today, thanks :)

I recall the shift from jpeg to png as a web default. Many sites would not accept one or the other. Eventually, png became more and more popular and "won." The same can happen with other formats, but it takes time. Any any site/org/company that deals with these uploads or displaying the images needs to be clear on what they can do and error out early when they can't do it. I recall "sorry, you tried to upload a png file, we only support jpeg" messages with links to details about the difference and how to convert them. And mime inspection worked back then too, so changing the extension was not good enough.