You still have to move it to the generation turbines, store it, and maintain the turbines. Even if the price of extracting natural gas is zero or negative, it may not be economical to use it for electricity generation in the future.
Solar, wind, and storage are a major disruption of our energy technology. They do not follow the same cost curves, and fuel-based generation is already a very mature technology. We are either at early ages or teenager years for solar and storage, we don't know where they will end up when mature, but it's going to be so much cheaper than it is now.