By my figures, Lindsey, over the last four years I have purchased 160-180 varieties of orchids. The majority were seedlings (about 100-120) and the rest were BS or NBS plants. My purchasing model has changed somewhat over those years. The first year, I would only purchase 5 seedlings and 20 varieties. Slowly, the number of seedlings of each variety increased to 25 but I reduced the varieties. I typically purchase about 100 seedlings twice a year and the last two years, purchased 40 or so BS/NBS twice a year.
Anyway, if I were to have one of them all, I would have quite a large (personal) collection. Needless to say, I can't be a seller (though only a small number of orchids are sold) and a collector at the same time. I just don't have the room. I will continue to keep a single specimen of those that I find the flower interesting or exceptionally beautiful (though seeing flowering might take five years).