> Not sure if you are part of the research team but a follow up question nevertheless.

I am not.

> what would it take to develop another widely supported image format? Would the research stage already need to be carried out as a multi-corporate effort?

I believe JXL will be very successful sooner or later, it already has a lot more support than many other attempts at new image formats.

But in general, the main way to get fast adoption on the web is to have Chromium's codec team be the main developers.