Nothing! But technology has improved to the point where people can see a proposal showing their room with your furniture rather than a photo of some other place. They can also see the same room from different view points and different times of day. And different arrangements of furniture. This gives customers a clear view before they buy.

An architect or designer recommending your products is like a sales force working for free except the end customer sees them as being impartial and therefore their guidance is accepted more readily.

You will see price drops in animation, such as "walk-throughs," and interactive web based presentations. This will be driven by a combination of faster computers and a competitive marketing environment. Models made in 3D are the cornerstone of this new frontier.