Three things, and product quality is rarely one of them.
Preparation is first. A coating over a slab that was never properly profiled has nothing to hold onto, so it comes off in sheets rather than wearing down. Oil soaked concrete and weak surface paste do the same thing.
Moisture is second, and it is the one nobody sees coming. Vapor moving up through the slab pushes the coating off from underneath. It looks like a bond failure and it is really a building problem the floor got blamed for.
Third is the wrong system for the traffic. A build that suits a showroom, put into a forklift aisle, will not last. That is a design mistake, not a defect.
Then there is maintenance. Hot tires, metal chips, and sand act like sandpaper once cleaning falls behind.
Had a floor fail already? Here is how we scope a commercial epoxy replacement in St. Louis.