Well it's because DiDio hates the trade medium, and feels that a poor collection program will increase sales on singles because people can't wait. Whether he's right or not I dunno.
It's not a matter of the collections not coming out on time. It's a matter of my pull list+my insta-buy trade list leave little room in the budget for much else.
That's pretty crazy, since DC's pre-2000 trade program was so strong that Quesada and Jemas looked at it as a model for the trade program they started. I wish all of this "hardcover-then-trade" business was done away with immediately. If a collection houses 5 issues, a trade is more appropriate. If it has 10 or more, it should be a hardcover.
I don't begrudge them making money like a traditional publisher (HC then paperback) on big books (events, Batman, etc.). Marvel has a bad habit of putting things out in HC that don't have a big market to begin with (I think they did a Premiere hc for Thunderbolts a year ago...).