Mr. Do said:
Is it cause or effect with Blizzard, though? I mean, I would have thought that their games sell so well precisely because they take their time and lots of financial backing for each title they release and they end up making great titles. Perhaps if consumers had similar reasons to have faith in other video game companies then they would be just as successful as Blizzard.
Or they can just keep churning out unfinished messes and yearly sequels and only make really good money with the help of a killer license (FIFA, etc.)
It's partly that, but things go deeper than that.
Some genres simply garner more sales than others and often a single company or a couple companies dominate them. If you want to buy a fantasy RTS game, who do you think of first? Blizzard, obviously. That sentiment often causes other companies to have little shot at breaking into the market, even if they have a great game. There are exceptions, but they're just that - exceptions.
Building up a reputation is everything. Blizzard has it, others don't.
Just as you can say that Blizzard's case is cause and effect - they make great games so they have a great reputation - the same is true for less successful companies - they have to have a game done by a certain time in order to get money from their publishers. Rushing games out before their done obviously means the games aren't as good, meaning the games aren't viewed as favorably meaning the companies aren't viewed as favorably: the cycle keeps sucking the companies with no great prestige towards the bottom.
To summarize: if they don't release "on time" then they don't get any money. Paying the bills comes before holding onto a game an extra 6 months to make it better. So it's an endless cycle.
Civilization's success means that Firaxis can escape that cycle for the most part. Most companies release 1 patch AT MOST for their games, usually ones that come at release and that's that. However, since Firaxis doesn't own Civilization they're still bound to agreements with Atari - when Atari pulls the plug and says "it's time to move on," that's what Firaxis has to do.