[graealex]

> It's pretty common in the indie game scene

That's such a weak argument. If I was an indie game developer, I would use whatever obscure format would offer me the most benefit, since I control the pipeline from the beginning (raw TIFF/TGA/PNG/... files) to the end (the game that needs to have a decoder and will uncompress it into GPU memory). 20 minutes extra build-time on the dev machine is irrelevant when I can save hundreds of MBs.

However, that is not the benchmark for a format widely used on the internet. Encoding times multiply, as does the need to search for specialized software, and literally everyone else needs to support the format to be able to view those files.