One clarification worth adding: BIM isn’t just moving from 2D lines to a 3D model. A 3D DWG can still be plain CAD if objects carry no meaningful data. The “I” is the important part—consistent asset and attribute information that can be exchanged and reused for quantities, coordination, and handover. Holographic displays may change how models are viewed, but adoption will depend more on data standards and clear information requirements than on display technology.