LED luminaires are one of the most direct-sourceable categories worldwide, with genuine factory supply available at project volume for panels, linear profiles and downlights.
For controls and smart lighting we usually buy through the system manufacturer's authorised route, because commissioning support and firmware access matter more than the unit price.
Direct manufacturer supply is used where it is genuinely available for the category and volume. Where a brand supplies only through authorised partners, we buy that route to protect warranty and benchmark it so the difference is visible.