It's a bit of a catch 22.
My rental service actually started sending me Season 1 of 'Boardwalk Empire' and then after sending me the first three discs (out of five needed) they suddenly switched to Season 1 of Voyager!!
I emailed to ask why and they said it was because they didn't have the next disc to send so they went to an alternate. Except now they can't go back to sending me 'Boardwalk Empire' so I can finish off the season because their automated system now will just keep sending me Voyager. I also have Enterprise on my list to rewatch as well. Then I might get back to DS9.
Presumably until it hits a point where it doesn't have an available disc to send out!
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist