Liquid mode? It looks like a tool to reflow the content in existing PDFs, which are often intentionally not responsive. I don't see how this is similar to HTML.
The AI is required to reconstruct text order in legacy PDF files. Once you have the text, why wouldn't you render it in HTML?
Better have an alternative that is controlled by one company. Shareholders like that. Think social media, ads, apps.
PDF is an ISO standard. PDF 2.0 has no proprietary components.
Pretty sure their 'AI reflow' is something that is not (nor will be) in the standard
yes, because it's a tool in Adobe Reader and not part of PDF.
PDFs can do all sorts of voodoo (like you can do with HTML if you hate the user's browser) to make legible content that is pretty illegible to machines - but most documents are produced by tools that have pretty sane outputs that can be reverse parsed to get a pretty nice HTML blob.