There's a big difference between your buddy paying you $20 to take him to the airport couple times a year and regularly giving strangers rides where you expect

There's a big difference between your buddy paying you $20 to take him to the airport couple times a year and regularly giving strangers rides where you expect to make a profit. Even if you picked up a hitchhiker and they gave you $20 for your troubles that hitchhiker is not your customer and you don't regularly drive around looking for hitchhikers to make a profit. It's actually pretty straightforward. That's why the term "sharing economy" is so disingenuous; nothing but doublespeak.