"Almost?"
Paramount claimed to have outsold Warner's 300 in each's first week sales. Doesn't look like that really happened. And TotalHD has been shelved indefinitely, probably never to be seen again. Not sure Warner even needs money to move. I think they seem to feel that two formats approach is holding back their sales. They're 30% of sales now, with their Blu-ray outselling their HD DVD 2:1. After one format wins, maybe many people will get off the fence.
I have read that their "contract" or "agreement" expires 10/31. Maybe it is "good form" to wait until then - or until after the holiday season is over. Even if, god willing, they move to Blu-ray exclusively (probably soon to be followed by Universal if it happens), they'll no doubt be selling HD DVDs for months to come.