Fair enough but the point others are making is that despite all the commercial successes that have a Scottish connection, gaming contributes diddly squat to our economy. Last time I looked this sector only employed 1,000 people in Scotland and contributed a mere £100m to our GDP - a small fraction of what Faslane puts in, for example. Sneckboy is probably about right about gaming putting £30m into the public purse here, but it also benefits hugely from grants, with the result that some people say it actually contributes nothing overall. The $2bn gross is irrelevant as all that money goes elsewhere. In the case of GTA, it doesn't help us that the publishing rights and profits from the game are held by Rockstar North's parent company in the USA.
Incidentally I once came very close to taking a job with David Jones, the game's creator, on a new venture. A narrow escape, as that project went tits up a year or two later. In actual fact many of the 200 or so people who lost their jobs were just contracted in from the USA or Far East specifically to work on the new game and just went home when they were made redundant.