Selected forms of species are sometimes cloned just as selected hybrids are. Many orchids are produced by seed though, both species and hybrids. They don't need to be identical to be desirable. Virtually all slipper orchids are grown from seed for instance, Paphiopedilums and Phragmipediums, because they can't be cloned in large numbers like most orchids, but also many others. Some seed grown orchids are from self-pollination and others are outcrosses (between unrelated plants). You get all variations in commercial production at different times, for different purposes.