Sure, some people may buy catalog titles, but with the war titled heavily towards blu, how many people will rush out to buy a catalog title in the losing format? I would be just tempted to wait until it appears on blu, as that seems inevitable at this point
Why wouldn't people that already have HD DVD players buy red titles they've been waiting for? Especially if they don't have a Blu player yet? It's not like every HD DVD owner will be purple in the short term. It just doesn't make sense to me to wait for a title on a particular HD format you can't play yet, when it is available in HD on a format you can play. I'm missing something.
Recent buyers (like me) are in a different boat...but that's a different topic.
If we were longer term HD DVD owners, count us in the group interested in HD DVD catalog titles. The price would have to be right as all the ones haulin oats mentioned would be double dips. On the radar though is Twister from WB in May. Unforgiven is another catalog title we'd get.
Perhaps the overall problem with catalog sales is the double dip factor. Studios would have the research on this, but some general issues are apparent. New releases are obviously not affected by double dips. Catalog titles...well, if it's a good title, then yes, the double dip issue strikes as the DVD version would have been popular. Blade Runner was/is an exception as it didn't really have a DVD counterpart.
OK, enough rambling. Point is, I don't see a reason for established HD DVD owners to wait for possible Blu versions of red titles they could pick up now (or in a couple weeks). Particularly if the red titles are discounted...