Simply, this seems to be an action to put mineral and resource leases back in the hands of the private individual without government control, or protection for the owner.
When you combine multiple gas leases that are all physically located above the same gas field, unitizing is a way to "pool" those leases so they can operate as one entity, ostensibly improving cost efficincy.
This is when several gas leases are combined together to form one large leases. The gas is pooled together as the each well works as a team. Those owning one of the leases that combine into the larger unitization will share their royalties with the others. You may see less money initially but will be able to do more drilling.