Almost everyone simply downloads or views it illegally. The thing is it not only takes month for the series to arrive here, the DVDs are released only after the series has been shown on TV.
That is if the series is actually popular here and relatively easily available. Dexter, Weeds, Lost, Sons of Anarchy are a couple of series I can think of that are unpopular and therefore not as simple to come by.
Television shows on HBO and Showtime (Weeds from your list) are usually not available in the US until the DVDs come out, which is usually shortly before the next seasons starts.
I am aware of HBO Go, but it is not available unless one already has cable and HBO.
That is if the series is actually popular here and relatively easily available. Dexter, Weeds, Lost, Sons of Anarchy are a couple of series I can think of that are unpopular and therefore not as simple to come by.