The identical hangar at North Weald came with a 25 year lease so it may be similar for DSA. It all depends on what the small print says of course.
North Weald is no good as there are no ILS but it is a potential home to go to while the rights and wrongs are argued about.
2Excel, a far more savvy organisation are in the same boat of course and they need the same facilities as NPAS. They moved their governmental air support operation into DSA in 2017, the same time as NPAS [sort of] moved in and completed their facility.