Because laptop monitors were traditionally driven through a direct LVDS signal, you can buy an adapter but it would cost much more than $20... So the question

Because laptop monitors were traditionally driven through a direct LVDS signal, you can buy an adapter but it would cost much more than $20... So the question is why would you want a $100> worth of extra logic in a laptop that only a fraction of the population would use, this seems to be even stupid from an environmental perspective since you are increasing e-waste not reducing it.