Correct. Most of the roses are patented. To develop a new rose from literally thousands of seedlings takes time, and money and up to 10 years of trial and error. Orchids cultivars are not really patented as far as I know but if someone makes a cross, it usually makes up to 50,000 seedlings. Orchid seedlings depending on the type and cultivar can take anywhere from 2 years of a phalaenopsis to 10 years for Mem. Robert Strait catleya. Multigenerics have at least 4 different genera so that requires multiple crosses. Of the seedlings that are usually grown in culture by the way, orchids require special conditions to reproduce in the wild. It requires sterilizing the pod, sterile agar, seeding the flask, reflasking, and transplanting into community pots and a while longer to grow the seedlings out before there is finally a flower. Some of the seedlings will be lost if air gets in the flask, or the seedlings dies. 90% of what remains will be junk and it takes up a lot of space. Of the 10% that are left you may have something unique and special enough to bring it to be judged. If it gets awarded, it gets named by the owner and the owner has to be the first one to apply for registration in England. If the plant has already been crossed, it cannot be renamed. Oh, by the way, you cannot cross any plant to get an award, you have to be able to follow the plants genealogy back to the original species on both sides. The named plant can be cloned to get a copy of the original plant and the process begins again. Most people will sell the sibling seedlings, they will vary just as brothers and sisters look similar but not exactly alike. Some of the colors will be different as they follow one parent instead of another or a grandparent trait suddenly shows up. They can still be nice, but not necessarily of award quality. Extraordinarily striking crosses that are unusual like Hybridizers' Dream sold for $50 for a seedling when it first came out. If you look at different plants with the same name, they look different some a darker pink, and some without the white edges.
So, actually it does make some sense the the hybridizer should get to recoup the cost of all the time and money spent in developing the cross. With orchids it is kind of easy to control the propagation. Propagation through tissue culture is expensive but the only way to multiply the plant to get a large quantity of the same quality plant. People dividing a plant won't get many plants. However, with other plants that don't take years to mature and are easily propagated, it is much harder to control illegal propagation and the owner of the patent often loses out on the patent income he is entitled to.