Exactly. Afaik, there are certain corners of the Web that benefit from some kind of markup. I think real estate is one, where you can generate searches of the MLS on sites like Redfin or Zillow (or any realtor's site, really) such that you can set parameters: between 1000 and 1500 square feet (or meters in Europe), with a garage and no basement. That's very helpful (although I don't know whether that searching is done over indexed web pages, or on the MLS itself). But most of the Web, afaict, have nothing like that---and don't need it, because NLP can distinguish different senses of 'bank' (financial vs. river), etc.
