I think Glock is doing fine with PR. I see a lot of ads. Their SHOT booth is very crowded every year, despite the lack of "new models." You see Glocks all the time on TV and in the movies.
As far as articles go, most magazines only devote space to new guns. They aren't going to get a new piece every time one of their models gets the Gen 4 treatment.
Nonetheless, they dominate the law enforcement market. The civilian sales are probably just the gravy.
For the record, Gen 2 is still my favorite. I don't care for the finger grooves at all.