We don’t know!
We can only speculate. Maybe apple makes more out of new laptops and macbooks. Maybe the repair is to cover the expensive certification Apple makes suppliers adhere to.
In any case The Laptop Screen Man can fix it just as good as any apple dealer usually at half the price.
And Yes we use genuine parts! Apple don’t make their own screens, they use hogh quality screens from manufcturer’s such as LG and Samsung.
We stock these same screens and replace at a fixed low price.