They're definitely more cautious about over-publishing. Your LCS doesn't want to bankrupt itself with an inventory with 40 copies of "nameless hype speculator's book #1" sitting back in the back issues bin. Let alone issues #2 and #3 of the same series before it's cancelled.
Pretty much, the comic book industry has become much better at using data to market what demand is, and supply accordingly. Rather than the old methods, which were basically, "print a f***load", and distribute them willy nilly for kids to stumble across and hopefully fall in love with and buy in the hopes that one day it'll be worth more, like baseball cards." It's just a much more responsible business model now.