It is being downvoted because it is making an unsound claim without any backing.
Most likely there is not a single explanation, usually issues like these are more complicated then that. There is no consensus on whether unions are more powerful in the US then elsewhere, I’m sure you can easily find examples—or spin the narrative—to back either case. And finally there is no evidence for some ulterior motive of driver’s unions, nor even a convincing narrative. Quite the contrary there is both evidence and a somewhat convincing narrative for why the ride-share companies would want to keep their workers from unionizing and asking for full-time worker’s benefits.
Most likely there is not a single explanation, usually issues like these are more complicated then that. There is no consensus on whether unions are more powerful in the US then elsewhere, I’m sure you can easily find examples—or spin the narrative—to back either case. And finally there is no evidence for some ulterior motive of driver’s unions, nor even a convincing narrative. Quite the contrary there is both evidence and a somewhat convincing narrative for why the ride-share companies would want to keep their workers from unionizing and asking for full-time worker’s benefits.