First off, consoles and their games have been available for sale even before the ban on consoles was lifted. You just had to go to the shopping area for teens, with the shops of cute stuff for girls, the anime shop filled with figures, and look for the shops that had TVs and couches where people were playing on a PS3 or XBox 360. Plunk your money down and walk away with a hacked 360 pre-loaded with a crap ton of games. Didn't get the game you want, go through the bin of pirated stuff and buy one for just a few American dollars.
None of these shops are selling the consoles or games legally. But because nobody can be bothered to actually enforce the laws, they just open up a shop in the right area (teen shopping area) and sell the stuff out in the open. So the only thing these laws will do is stop the games from being sold legitimately at any of the major stores in their electronic sections.
Second, if you still want a legit copy, the folks in Shenzhen can just hop the border to Hong Kong whenever they want, buy a copy there and come back. One marked up sale on TaoBao and you've got yourself a legit copy.
Third, if you don't want to bother with getting a hacked console unit and worry that pirated games might ruin your system, and just can't wait for your buddy to do a HK border run for you, then just go down to the many many many game clubs. These folks rent out an apartment, set it up as a place for people to play games. Pay your fee and drop by to play on their PS unit with whatever games they have in their library. When I was in Changsha, a 20 story building I was in had 2 to 3 of these game clubs on every floor from the fifth floor on up. No one ever coming by to close them all down for their illegal consoles even though they're all in the same damn building.
Last, these rules aren't meant to protect the Chinese people from the evils of these games. They're ignoring the laws and playing these games because again, nobody enforces them. Instead, it is to keep Microsoft, Nintendo, and Sony out of the country by making it too hard for them to compete legally, so that when the Chinese companies roll out their consoles, they have no legal competition. That is the real reason for these censorship laws, a cover to keep foreign games out so Chinese games don't have to compete with them when they get released. They all know that they won't be able to compete if the playing field were even.