Well, if you consider some of the big catalogs that sell a LOT of plants (not just daylilies) -- plus the suppliers to the "big box stores" and nurseries nationwide - they would need thousands and thousands of divisions of a given daylily. It would take years to get that many, and a lot of man hours to dig and divide, replant, dig, divide, replant -- but with the technology now to do tissue cultured daylilies they can make a lot of slips quickly which can be up potted and sold in very little time compared to doing it the "old fashioned way"...
and the "average home gardener" never would know the difference. Or, for that matter, care.
I once heard about a field of more than 10 acres of rows of a certain popular daylily that had been TC'd, then planted out to increase "more naturally." Think how long it would take to get several acres a daylily if you started from a few double fans.
For some daylilies, now, they have been TC'd and sold at nurseries so much, it's hard to know which ones you buy, even at daylily sellers have been TC'd. Even the daylily nursery may have bought theirs at Lowe's, instead of from the original hybridizer.
