Acrobat Reader has been the poster boy for poor software for many years and it appears that Adobe have been good at adding new features to make it largely impos

Acrobat Reader has been the poster boy for poor software for many years and it appears that Adobe have been good at adding new features to make it largely impossible for their competitors to keep up. What is one to do? Surely, the obvious answer is to ringfence PDF (or another new format) for the most basic features. These could more easily be handled by 3rd-party apps both securely and to render correctly. Let Adobe do whatever they want with their own format by adding loads of stuff people don't want, then the sell is harder for them: Get a cheaper, safer app for writing portable docs which can do most things or pay more money for a very insecure format that does stuff you don't need. I assume that others have attempted at some point to make an OSS alternative to PDF and I'm guessing it hasn't worked yet?