Sure, but if you have abundant energy you can use hydroponics to achieve the same. Dyson spheres provide vast amount of space but if you have practically infini

Sure, but if you have abundant energy you can use hydroponics to achieve the same. Dyson spheres provide vast amount of space but if you have practically infinite power you can create habitats that provide the same functionality with added benefits of gravity (O'Neill cylinder) and not being visible at star distances.