I highly doubt that Netflix could have predicted where it would be now, and the contracts that they have now.Except what are they doing to dramatically increase the size of their library?
Netflix makes new stuff all the time and makes deals with big companies like Disney to increase their library, meanwhile CBS can't be bothered to combine the CBS and Showtime streaming services.
CBS is hand cuffing themselves, it doesn't seem like they are putting their best effort forward.
CBS is trying something new, which will involve a lot of growing pains. Just because they haven't told the general public how they are expanding their library doesn't meant they don't have plans. It just means they are not going to tell us everything.