At least for Netrunner, it was only 3x for the base set, and 2x would almost certainly get you enough. All the additional sets after the base set came with a full playset of 3x copies of each card.
Sadly, Netrunner is dead and the license lost, so not a lot of hope for new, official cards any time soon.
Sadly, Netrunner is dead and the license lost, so not a lot of hope for new, official cards any time soon.