FILE- In this Jan. 31, 2018, file photo, a Lyft logo is installed on a Lyft driver’s car next to an Uber sticker in Pittsburgh. The “gig” economy might not be the new frontier for America’s workforce after all. From Uber to Lyft to TaskRabbit to YourMechanic, so-called gig work has been widely seen as ideally suited for people who want the flexibility and independence that traditional jobs don’t offer. Yet the evidence is growing that over time, they don’t deliver the financial returns many expect. (AP Photo/Gene J. Puskar, File)