Not everyone listens to their CDs 100s of times.
I don't think i have have even come close for any CD, i might make it to 20 - 40 for a good album. Think how long 4500 min (100 plays of the album with 3min tracks) is if you believe that is the norm. No average artist will be listened to the required amount to achieve the breakeven price.
Streaming eliminates the required investment to listen to something else so unless you get advertised on the front page and your whole album is worth listening to you wont anywhere near the same number of plays as a CD does.