@darktable I wonder if that's something that could be regulated: if a file format is introduced and maintained by a vendor in a monopolistic position on a market, the file format needs to be open, standardized, and not patent-encumbered.
It's a pipe dream, of course, but perhaps possible long-term.
@rysiek @darktable @tek_dmn @patrick_h_lauke Even then they will make interoperability hard by making 'mistakes', adding custom extentions, make the format ambiguous or very complex, etc.