They're not a charity, they're a profit driven organisation. To what degree isn't the point, but if no one wanted to play GT anymore, they wouldn't keep making it out the goodness of thier hearts. They wouldn't have Cr you can buy for real money is profit wasn't a factor.
It isn't an all or nothing scenario where they have to be not intersted in profit or focused on maximising profit no matter what. If it were the latter, we wouldn't have developers making racing games. Whoever the developer, they may be making the game they want to make, but they are all after a profit and will make concessions to appeal to a large enough fanbase to justify their work.