The difference is one of who holds the mineral rights. If it’s Federal Land, not much is going to happen under this regime.
The Colorado shale deposits are largely on federal land I believe, (although some are under private land). That made it easy to shut that down.
I remember reading here (FR) a few years back that there was a project in Utah on private land that was also shut down by the feds. They just really don’t like shale oil.