Perhaps as well as the layout, the "business class" service could also include better (and more immediate) forms of discoverability and curation to help with the above, or even the ablity to create filters (so I could block out all political or environmental stories, say).
By creating a Business Class, news providers are creating a premium product that is actually better. They could also add other value-added services, by (for example) providing tailored notifications. They have a ton of data; why not charge people to make better use of it?
Same thing with The Times' iPad app here in the UK (although I don't subscribe to that because I hate their content, but I do love their iPad app.)
So it's not entirely a new idea, it just hasn't been pushed to its logical conclusion yet.
There are a lot of (free) ways to end up with what they are showing, so I don't think this matches the business/economy class comparison.
Obviously readability/etc. isn't that much of a hassle, but I want to be able to browse through the site and have a nice interface right there, not browse through a nasty site, find an article to read, then move over to another site to read it, then go back to keep browsing.