He's defending PSD by saying "It works great the way it is. And people shouldn't be wanting interoperability with Photoshop.
A key phrase is "And it's not at all clear that the benefits here would outweigh the costs.". Whose costs, and whose benefits? Obviously it wouldn't be great for Adobe to have to re-write their file format, and they wouldn't get that many happy customers initially.
A key phrase is "And it's not at all clear that the benefits here would outweigh the costs.". Whose costs, and whose benefits? Obviously it wouldn't be great for Adobe to have to re-write their file format, and they wouldn't get that many happy customers initially.