TVs are made from components that are made through almost entirely automated processes at such large scales that the underlying raw material and cost of shipping become the main driver of cost. Paradoxically, that means that TVs that have gotten thinner and lighter use less material and therefore have a lower floor of how little it can cost.

Once a production line is set up to make the components, each additional one produced costs very little, so making high volume runs is the key: lots of shared parts between brands and models, very long production runs to minimize the cost of redesign or retooling or downtime.