Dc motor has few  drawbacks like

1. low voltage regulation in DC series motors

2. lower speed regulation

3. It can not be run at zero load conditions

4. Also use of permanent magnet makes the operation of motor hazardous

5. Also the armature diverter and field diverter, that can be used to control speed, need space.

6. Also speed control can not be done smoothly..

Due to these reasons DC motors can not be used in lifts.  3 phase induction motors are used in lifts. It has large starting torque and lower starting current. Also the speed control can be done smoothly by power electronics drives.

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This is really nice answer, I was really want to know this and here explain it point wise that is really helpful to get it easily.

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