And the volume per well is still small, not cost effective for a generator set per well along with building out the power lines.
Building out the gas lines are small, low pressure lines in the gathering system, often made out of plastic. I suspect they are cheaper than the power line.
Keep in mind each well isn't going to produce a steady rate of gas over time. It is going to drop in this tight formation just like the oil does.
The generator would have to be sized for the peak, yet would quickly have to operate at a fraction of the flow. And it cost more than the basic gathering system to normal gas plant.
The problem remains, each individual well produces not enough gas for economics. Spending money on generators to produce not enough electricity to be economic doesn't improve the situation.