Darrel Manson wrote:
: Does anyone have an idea of what happens to quality and quantity of films during financial hard times? Does it result in more or less crummy movies?
Hard to say, since so few films from the '30s have survived.

Of course, back then, studios churned out a new movie every week -- 50 movies per year, per studio, and perhaps more if that figure doesn't include B-movies (my memory could be exaggerating, but you get the gist) -- but on the other hand, they didn't have to compete with TV.
In fact, the 1950s, which as I understand it was a time of relative affluence and consumption and economic progress etc., etc., etc., were a bit of a nightmare for the movie studios, partly because the rise of TV ate into their audiences in a big way. (The fact that two landmark Supreme Court rulings forced them to give up control of the theatres AND made it easier to show non-MPAA-approved independent and foreign films didn't help the studios, either.)
I haven't checked, but I have a strange feeling the 1980s, which are also considered a time of affluence etc., might also have been a bit of a nightmare for the movie studios, thanks to the rise of cable channels and VCRs. (The studios fought the VCR in court, over alleged copyright violation, for years; and while the VCR did facilitate the rise of video rentals, studios didn't really think about videos as items that they could SELL right-off-the-bat until, I'd say, 1989, which is when
Batman hit the market at sell-through prices mere months after it played in the theatre.)
So it's quite possible that prosperity = the proliferation of competing media, whereas economic stagnation = people falling back on movies as a relatively (and reliably) cheap form of entertainment. At least if you smuggle your own food into the theatre.