I'm not sure how your Freehand example sits with all this. It more highlights the poor attitude that many of the incumbents, Adobe, Apple, Microsoft et al have towards what they might call "legacy media". Your Freehand efforts were drawings first and media files second - the first part is worth maintaining. Sure, many games only make sense as "media files", but I don't think illustrations fall into the same category. Particularly galling is the speed at which video codecs and image file formats are deprecated and new poorly supported formats (eg. HEIC) become the default in certain ecosystems. Imagine going down to the local art gallery and suggesting all the "legacy media" such as oil on canvas be thrown in the dumpster.

I have C code I wrote 30 years ago that still runs and Swift code I wrote a year ago that doesn't. I understand, they're not entire apps in themselves, but this endless reinvention of the wheel is often pointless, while what's thrown away is often tragic.