2,99 is the reaility we have now, and its clear most posters reailize it is more realistic to expect that in the near future then what you are suggesting.
Eventually yeah like everything else here in life when it comes to most things, espescially entertainment, the price will rise, but what you are suggesting is simply so unrealistic for so many reasons already stated.
This is not a case of “they should do this” but “they are not going to do this because of a 1000 different reasons”.