PDF Unfit for Human COnsumption

From Nielson...

Users get lost inside PDF files, which are typically big, linear text blobs that are optimized for print and unpleasant to read and navigate online. PDF is good for printing, but that's it. Don't use it for online presentation.

Problems with PDF
Optimised for printing, not for viewing
Don't follow standard browser commands
More likely to crash than html pages
Not in context and breaks flow as you have to wait for document to load
No link to document it opens from. User has to figure how tp get back to previous document
And IMHO, the worst of all, not able to click links in the PDF file
Most pdf files are huge content chunks, which don't scroll nicely, but in fits and starts and lack internal navigation or nice search capabilities.

Why can't you have a file which looks like html, but prints like pdf?