In undeveloped contries, people are likely to A) be non computer savvy (so you don't know where/how to pirate software)
Ah, come on. My 8 year old cousin knows how to pirate software. It's not like it requires a high level of savvyness. Also, this has no bearing with what I said
B) be unable to afford broadband, or more likely not have any broadband provider in your area, and if you have a dialup and are downloading a 6 gig game at 5kb a second it will take ~14 days of having your internet on full time (clogging up your phoneline and costing a lot of money).
Not that many games are 5 gb big, and you can download 2-3gb on dialup without much trouble and without clogging your connection too much. Sure, it wont be near-instant instant gratification as with broadband, but it can be done.
Furthermore, if they can't afford broadband, chances are they don't have a top-notch computer exactly, making the whole "5gb game" point moot. If the best thing that runs in your old piece of junk is starcraft, the download size of, say, Assasins Creed, is irrelevant.
Yeah, in developed countries they don't have any due to the fact that law enforcement will stop them and because people won't buy them.
Hmm, actually, there were bootleggers around, till recently. There might still be, for all I know, never was too interested in them. They sold cds and the like for around 1€.