If this wasn't a national park, I'd bet someone would have, by now, tapped into this free heat to generate electricity like Iceland does.
The general part of the country has a ton of geo-thermal. Not as much as it should probably but it is also surprisingly expensive to maintain and drill.
The Yellowstone area would probably be far more dangerous and not give a very good outcome due to how much activity there is. It's probably part of why Idaho has far more than WY has. It's still geo-active but not so fucky.
Geo is a lot more complicated than "drill a hole and put a pipe in it".
I was thinking not so much at ground zero of ol Faithful, but further enough away to still tap into the heat.