Commercial displays cost more because backlight testing and ratings double or triple. You’re paying more for longer uptime since your display is likely to run 12+ hours a day straight and not for 1-2 hours a day with an occasional 8+ hour usage. You’re also paying actual cost, but a lot of it really has to do with testing and materials that are built to survive consistent and frequent usage, plus centralized management. Lots of people assume it’s the same shit, but it’s completely different and it shows when you buy a consumer off the shelf display and put it in production.