I agree with that point. It doesn't make sense if you want to sell millions of copies. They should focus on a varied single player experience, affection with your favorite brand, different play elements that please youngster and oldtimers. Include stuff from different car cultures and make the racing exciting.
I mean these are the blurbs for some of the key headings on the website:
It’s one thing to be number one in the world, but quite another to do it with the pressures of representing your country. Do you have what it takes? Or how about driving for your favourite manufacturer? You can test your resolve in two championships officially certified by the FIA (Fédération Internationale de l’Automobile), where you’ll need more than just driving skill to be successful.
The official races of “Sport Mode” where top players from around the world will compete, are hosted on weekends in a match that will be broadcast live. TV quality Live cameras and Live commentary, now in a video game.
You can acquire a real motorsport licence: the "FIA Gran Turismo Digital Licence" The "FIA Gran Turismo Digital Licence", issued after fulfilling various prerequisite in-game, will have the equivalent value to a real world motorsport licence.
It's extremely niche. Sure, at the top it talks about the cars and tracks which appeal to everyone, but the gameplay? Nothing to entice the casual player. The above sounds extremely intimidating.