We are not seeing a repeat of earlier accidents where the trim motors couldn't generate sufficient torque to overcome the stabiliser loads?
Good question megan. When looking at the trim inputs on JT610 as they lost control, there appear to be some very short stabs at nose up trim that would not have been enough to affect the outcome.
Why they did not continue to hold the trim buttons down is not known at this time. Maybe when the CVR data is disseminated we will know.
Could be that they felt it wasn't fast enough to help their situation. Could be that the trim wheel wasn't turning.
Apply Occam's Razor and you shouldn't be too far from the truth.