Did the rideshare companies actually jack up their prices at any point? How would they do that when they're still in competition with each other and the barrier to entry to the market remains low? Any attempt to raise prices would immediately result in more competitors.
That was the whole thing with the taxi medallions. It was a cartel, because that market has very low barriers to entry and the taxi companies didn't want the competition.
Uber didn't make prices artificially low, they just provided competition which stopped them from being artificially high. They're not losing money on rides, they're "losing money" on self-driving car R&D and things like that.
And "fair trade" is a marketing device. People want to feel good about not exploiting people, so companies not exploiting people get to charge a premium for that. That doesn't mean companies who are paying suppliers less don't still exist or offer similar products for lower prices purchased by customers who don't care as much about that.
Neither of these are examples of what you're describing.
