Noticing I clicked a page and got redirected to a different URL from the Google search result, where the search term is what I'm currently trying to jump in to the ranking, I'm wondering that is there any correlation between Google not updating URLs on a search query and how competitive it is in terms of keyword difficulty.
I'm guessing that Google has tendency to ignore an indexed site's URL (or description, or even the title) updates. It means that the search query does is not worth updating so frequently for Google or for users. So, I could make an assumption that the search query is easy to rank (or not easy to rank) from a SERP result with a many of (or barely none of) inactive ranked top pages.
Is my guess correct? Is there any research or findings regarding of this?