What's with rash driving by delivery drivers in Gurgaon?

Every time I drive, I see some sort of a near-miss when it comes to delivery drivers. Overtaking from the left during turns, making snake-like movement to get ahead fast with no space present during jams and even in red-lights, riding on footpaths, riding on wrong side of the road, breaking red light - you name it, I've seen delivery drivers do it all - sometimes on the same day itself. Why is this happening? Is it a lot of new riders coming on to the road without proper training on road rules? I know that delivery companies don't penalize drivers for being late on the road. But, they should be taking care to train these drivers on simple road rules.