[Someone1234]

Why do people use K-Cups? Why do people use tea bags instead of tea leaves? Why are microwave/takeout meals so popular? Why are washing machines and dishwashers more popular than doing it by hand? Why are battery powered watches more popular than wind-ups?

One word: Convenience.

It is easy to believe that people will pay for it, just look at the history of the last one hundred or more years. Convenience has trumped almost all other considerations (including enjoyment in a lot of cases).

So the only question that needs to be asked is: is this more convenient than the alternatives (e.g. tablets) or is the lower convenience worth the lower cost relatively speaking? I don't know, but that is the question to be asking.