Rabulias
the Incomparably Shrewd and Clever
Any licensor (unless they sign a really bad-for-them one-sided deal) can tell a licensee to remove their products from their store and/or hosting. I remember back in 2008 or so that Wizards of the Coast told DriveThruRPG to remove all WotC PDFs from their site. There would be no further sales of the PDFs, and purchasers could not download them again after the cutoff date. I think I got a 30 day warning to download all that I had bought from them. Eventually they returned to sell PDFs in 2012 with dndclassics.com.
I can only hope that we will one day see PDF releases of official 5e books. Sigh.
I can only hope that we will one day see PDF releases of official 5e books. Sigh.