As you can easily see, all these devices have straps/stirrups on their pedals. Once the feet are attached to the pedals, it is possible to spin the pedals even when sitting in an office chair on casters, even with artificial resistance produced by the device. If you do it properly (spin, do not mash) the net "recoil" from such device is zero, meaning that your chair will not roll back. The ergonomics of this thing is, of course, very different from that of a bicycle.