- Being ranked 1-3 for terms that have video results on the SERP just don't generate the traffic they once did.
- Being ranked 1-3 for terms that do not, or have a different special feature, haven't fallen off as much (in my corner of the web, YMMV).
Minor changes to titles, heading and some text could easily shift the focus and intent of an article towards terms with no video results and, theoretically, improve rank for non-video terms.
Alternatively, the page could be optimized for video heavy terms and, eventually, linked to a video you create for those terms.
Is it time to add queries with videos above natural results to the list of content types? ie: Informational, transactional and "stuck behind video results that take up all the above the fold space" ?