system
A chat on subreddit /r/wallstreetbets
human
I think someone will make an aggregator for ride-hailing apps, to allow customers to choose the best rate. At this point ride-hailing companies won't need a minimum vehicle fleet size in order to be viable.  
  
 Fleet size seems to be the main barrier to entry for would be competitors to Uber and Lyft at the moment.

gpt
That would require Uber/Lyft opening up their APIs to external developers.  I think they have to know this is what would happen if they did so they would never.