It is a trend in everything that surrounds us - cars, fridges, clothes, shoes, buildings - everything is made cheaper. Compare computer case from 1990 and now - modern economy class cases are ultra light. Reason is simple - market doesn't care about 8 or 10 or 12 bit displays, so they are not offered. Cost to the company to introduce them far overweights benefit of selling it to .01% of individuals who care. Or who think that they care.