Not especially. When designing SR4, it's clear to me that the designers desired to streamline things. Getting access to a delta clinic, the availability of the single piece of gear you can afford, etc. etc. -- it's all fairly time-consuming to figure out out of game, much less in-game. So the availability mods were dropped in favor of simplification.
Of course, the idea is that the GM still controls you getting the gear via who you know; after all, you still need to know someone who can get you access to a delta-grade clinic. Once you're in, though, hey, you're in ...