The big issue with the product is that after the first transaction, no-one has any incentive to use your marketplace. There is a company in my country doing this. They are probably not worth zero tbf but they have a massive issue with people just cutting them out after the first transaction. And what is the problem with just building a brand? I employ a bunch of dog walkers, I do checks on them, I build a trusted bra…
Back in the day I used to drive a shuttle and once in awhile I'd get pressured into taking a passenger that wasn't related to the business I was employed by. It's pretty harmless but still a big no-no since you're technically breaking some laws since there are certain loops you have to jump through to take on fares like that (got screamed at by towncar drivers when I arrived at the airport. I'm sure they were thrilled when Uber became a thing). Anyways the passengers paid 40 bucks for a 20 minute drive. That was the going rate they were used to paying back in 2008. There's a LOT of incentive to cut out the middle man.