As a ballpark, very rough estimate consider:
Since the NES days, Nintendo alone has averaged about 80 million pieces of software sold per year, yet their revenue last year was something like 1/4 of the industry total...
If we pretend for a minute that all of that money came from software that makes me think 320 million+ units of software are sold every year as a very, very low minimum..although it is more like 5 million hardcore gamers buying 50 games each year, and and 35 million other people buying 2 games each year on average, vs. 40 million people buying 8 games.
I would think it takes a dominant console 5 years to push 1 billion pieces of software these days.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu