Are there any that are actually successful with this strategy? Uber and Lyft, for one, but they still don't make profit and aren't really that sticky, honestly, given that people will use other services if they're cheaper, like Waymo and some new ride sharing upstarts I've seen around recently.
1. collect underpants
2. ?
3. Profit
Uber and Lyft are great examples. They haven't established long-term stickiness with drivers or passengers. So if either of those groups get offered a better deal they will switch. Therefore it's just a relentless race to the bottom with no sustainable business in sight.