Despite exactly what the ads show you, drones crash constantly. A very good drone will take an unplanned descent and ground interface (aka: a crash) in stride, with out harmful the frame. It can even involve shields to guard the rotors and electronics from damage. Within their blog, DJI stresses https://www.aeroindustrial.com/product/dji-matrice-30-series-parte-10-par-de-aspas-1676-high-altitude-cwccw/