For digital publishing, Adobe have Dreamweaver, Muse, Edge, (part of InDesign), Flash... all linked with Creative Cloud, which allows you to publish 'to-the-web' (Great for non-technical designers).
I would hazard a guess that you work for Quark, or are an Apple-like fanboy of them, to present such a one sided argument with a fraction of the complete information.
To say Adobe is tied to Postscript unlike Quark comes across as fanboy-ism. Given adobe are heavily invested in HTML. That said the OP clarified what he means by Desktop Publishing and it makes more sense.
As an (non-paid) author for the Dutch InDesign User website and magazine I do find it funny someone might accuse me of working for Quark!
What CSS/HTML does Quark support?
From a developer's perceptive it might suck, but from a designer's perceptive it's 'good enough' and better than static PDF files like InDesign creates.