There already exists 3D visual displays of (for example) an oil rig, where the user can navigate throughout the structure removing parts. Each part can be rotated in 3D, and when the user chooses, each part can show it's unique part information: size, weight, replacement lifecycle (last replaced or repaired), cost, Bill of Materials, etc. However such functionality requires a database of the Oracle kind sitting behind the "graphics". So any Websolution must be database driven, since dynamic information (information that changes continuously - like prices) can only be handled by dynamic databases.
The main pushers of this type of technology has been areospace, car and military development groups, though the example above was taken from a friend of mine in Norway who tried to sell this 3D solution to the Norwegian government for their oilrig product lifecycle management program.
In closing, the difference between using a mouse or my fingers to "grab" an object on a display is no longer a big leap of the wallet, and it's also a moderatly easy jump for a midsize company (100+ employees)to make a webbased solution riding on top of Oracle. So I see this as a question already answered - it's already here, but not out on the WWW for everyone to experience. Too bad - it's really fantastic!