Well your right ,but when I get sick of watching my blu-ray movie,I can sell it on Ebay ,can you sell your PPV on Ebay?
HD-DVD just introduced three layers disks, and a second major manufacturer committed to the format.
Given Sony's history with formats, it's very possible that by the time you want to sell your blu-ray player, it will be worth as much as an 8-track player.
And to elaborate on another poster's comment about not wanting to see movies twice... I have many DVDs of movies that I loved, that are still in the shrink wrap, because they never have come to the top of my list of things to watch. As a result, I am in no rush to replace those same movies with a disk in another format I won't get time to watch.
PS You'll still need to rent HD-PPV's for all those films that are on the two labels that don't release on blu-ray disk...