Did Postmates make a mistake by being acquired instead of going public?

Since they were acquired by Uber, we've seen not one but 2 blockbuster IPOs of gig economy companies, DoorDash and DiDi Chuxing. Even 6+ mos later, DoorDash stock is still going very strong. Not to mention, IPOs have also been very hot in general. Meanwhile, Postmates sold itself to Uber for a measly $2.65b.