Once the ships have gone home, there will still be people reviewing stored sensor data for quite some time. The "search" will never really be "over" until the mystery is solved. Could some new clue be residing in existing data that will inspire a further sub-sea search? Or will some emergent sensor technology locate it in the future? Certainly possible, however unlikely it may appear at the moment.
The effort and resources put forth in the search effort since it went missing is nothing short of astounding in my view. It's sad that such an effort has not successfully located the remains to date. But that's how it stands and people will have to live with it until such time that more is known. That may or may not ever happen. Only time will tell. That's little comfort to victims families, but sometimes best efforts fail to achieve the desired result.
Time to get on with it.