Many gyms do have Pilates. Usually mat Pilates and neccesarly not the Pilates machines. The Pilates machines are usually more often seen in a classic Pilates studio. It can be argued that the classical Pilates studios have more equipments and teachers who are fully certified with many years of education in Pilates, thus understand Pilates and the body more in depth compared to the gym. Hence, Pilates may be better than gym.