I have seen some built with small winches, and the old commercial short level elevators mostly used hydraulic cylinders, (most likely with restriction valves)
with out safeties one should consider it a big dumb waiter and the people take the stairs, and use the lift for non living things,
I had considered trying to build some thing my self, but my idea was to make a braking systems that the cable lifting hooked to, and a spring to pull it down so some weight would be needed to make it work on the lift platform,
the arms would pivot into the track and the out side would keep the track from spreading, and more weight the more braking power, if the cable goes loose,