These people aren't slaves. They are welcome to find other employment if they find the terms unacceptable.
There is no “other” employment when, in certain areas, every job at this “level” is like this or when this ai pattern/formula expands to other arenas.
If your Uber jobs start paying less throughout the day, you will just start accepting more Lyft ones.
Uber gains nothing from underpaying their workers because of the huge competition for these gig workers.
IF Ubers AI is inefficiently distributing work to its workers, Lyft will get them for free, without doing anything. That's how a market works.
However, if this so called evil algorithm increases productivity for Uber and its workers - everyone will get paid more, Uber, drivers, customers, except direct competitors like Lyft.
It's a good thing they do this. Anyone here saying its bad needs to suggest with a model, that this decreases productivity or somehow adds a market inefficiency.