I'd say now that the Internet has erased additional constraints and changed our viewing habits to a greater extent. We occasionally still watch programs week by week, but more often watch a complete series in rapid succession. An entire season can be watched over the course of a number of nights or within a few weeks.
We're half through Season 2 of Borgia on Netflix. (It's the European one rather than Showtime's Borgias.) Having to watch television the old-fashioned way would drive me absolutely bonkers nowadays!