This is bad for Kagi. They use both Bing and Google indexes, so every search is already costly. But Bing going up this much makes it crazy expensive.
But overall I'd like to see it. Maybe some pre-index struture? Just a large db of a page metadata? So that search engines can add their ranking on top of it.
I wonder if "not an index but a large database with raw HTML of pages" would cost less if you could get content providers to maintain a distributed cached copy of their content at their own expense?