This is true. Go back to 2005 and there were 2 very high magnitude feuds ended in a HIAC. The first was Batista/Triple H at Vengeance, and the second was Orton/Undertaker at Armageddon. But the last 2 years when we have gotten a HIAC, it was at Survivor Series and Summerslam. The WWE seems to have an idea for each ppv now, and it seems they have given each ppv their own identity. The E.C. at No Way Out, Night of Champions, an extreme rules ppv, etc. So taking that into account, I fully believe that HIAC matches that are used to end a big feud will be saved for the big ppvs like Summerslam and Survivor Series, as a way to try and keep those ppv's special.