Why Aren't We Creating More Geothermal Energy?

Why is it that it seems Geothermal isn't a big entity in the US?

What is Geothermal? 

Geothermal is a method of using a series of tubes/pipes planted in the ground more than 3 feet deep. In most areas, anything below that remains at around 50 degrees F. all year round, the deeper you go, the warmer it is despite current weather conditions and the time of day. It harvests the heat that the earth has and pumps it up to the surface so you can use it for a multitude of reasons, from heating & cooling your home, to generating electricity.

In HVAC systems, there is a solid water loop, that runs into the home's HVAC system. For electricity generation, you would go deep, turn the water that you're pushing into the earth, into steam coming out from your output, that would then go to a turbine, the turbine being the electricity generator. It proceeds after that to enter a condensation chamber/stacks. The water that is condensed, gets reused and sent back into the loop, and the rest of the clean steam, is released into the atmosphere. Clean, green, and steam.

If you really wanted to take the electricity generation up another level, you add turbines in the steam condensation stack. Another thing you could also potentially do, is the leftover steam leaving the top of the stack, which could be harvested and turned into potable drinking water since it has been steamed. 

I've done a lot of research over the course of the past few days, after I doodled out a conceptual idea based off of a heat pump system for HVAC, except instead of using it to condition the air of the home, you could use it in a turbine and generate electricity. Naturally, after I had already done some extensive doodling on the back of an important form, I finally moved into online research and realized, "oh, someone already did this lol", however the diagram I drew was fairly accurate to the diagrams I found online of such a thing. 

Generating electricity using Geothermal, can be up to 15 times more efficient, than heating with fossil fuels, not only that but there is enough power beneath our feet to power our planet for more than 200 million years. That's a lot of years. The more I researched, I saw that the U.S. already generates the most electricity in the world using Geothermal technologies, and yet, we produce such a little amount. That means other countries produce less than we do, and Iceland is sufficiently run on geothermal energy, and in fact, has an abundance of overflow energy that they burn heating all-year outdoor pools.

Cons of Geothermal? 

There are a few. The main one is that the upfront cost is just straight out expensive. Then if anything breaks on it, potentially it can cost thousands to repair, but as long as your system was installed correctly be a licensed HVAC professional, you shouldn't have a problem. 

Why has the US not built more to surplus our lack of electricity as it is? 
Well, there's not for sure answer to this question, there are plenty of theories. 

One that was suggested was that there are no profits involved, so the government won't take the time to look at it. 

Another suggested, that they would have to raise taxes to pay for it, but in reality, the upfront cost is expensive, but it's also 15 times for efficient than other current methods. 

But there you go, my take on Geothermal after a brain blast I had randomly. 
Here's a diagram of a Geothermal energy generation plant.
They're typically on massive scales, but newer technology is allowing smaller "modules" that can be put nearly anywhere, and if you need more power, you add more modules. ClimeOn uses this model specifically.