But yeah, agree with your overall point, PDF is currently the easiest, most well-supported way of sending stuff that doesn't fudge around with the design. What you send someone is almost guaranteed to be what they see, unless they use some weird PDF reader.
How often do people embed fonts in the html via a font-face + base64 ttf or woff data-uri?
I work in a soewhat big corp. and PDF is viewed as the basis for the digitization of existing documents, be it for archiving or for the exchange of data with business partners. Also, we still have a fax machine in the company.
But, this is not just the opinion in my company. The public service also envisions sending and receiving digital documents using PDF as the future. E.g.: at the end of my digital tax return everything is summarized in a pdf (great), which then has to be signed and sent by post (lol).
Not to mention need to save file in original Adobe Reader ("do you really want to overwrite this file?') every time you add a comment.
It converts documents to just images, then converts those back to PDF, all in a sandbox.