Reason gives way to production deadlines and some measures were implemented at viewer/av/printer levels. That said, it comes down to budgets, effort and deadlin

Reason gives way to production deadlines and some measures were implemented at viewer/av/printer levels. That said, it comes down to budgets, effort and deadlines. As to why doesn't one of us do it.. We I had a friend who wrote a pdf parser and he tells of the nightmare still. Pdfs apparently vary in their implementation, and there's no sure fire way to parse them all in the same.e way. Differences are usually small things, but it's enough to cause a non trivial amount of issues and cases to account for. The specification is also apparently a nightmare. Least to say, he would never touch pdfs again. Pdf is a curious case, sort of like flash, but has no real html5 variant, if that makes sense.