Unfortunately, a lot of what I do with images is constrained by what can be losslessly embedded in a PDF. Even if no influential organisation is opposed to BPG it will take at least 3 years, I would guess, for BPG to become part of the PDF standard, and then another year or so for it to become reasonable to expect people to have PDF readers that can handle it. However, I wouldn't be surprised to see BPG being widely used in 2020.