We were told physical media was dead, yet 4K Blu-ray sales are growing in 2026. Why? It’s not just nostalgia—it’s a massive quality gap that streaming can’t bridge. We explore the technical limits of bandwidth, the nightmare of video compression artifacts, and why Hollywood refuses to give you the master file. From the "analog hole" to expensive solutions like Kaleidescape, discover why your dusty disc collection might be your best home theater investment.