I must be in the minority here, because I KNEW that this was the plan from the outset, and that 7 would grow over time into more and more. Almost everyone here saw this with Sport, which released to much disappointment and a non-existent single player mode, and flourished into the game we know today, which I personally love, and has a HUGE amount of content that wasn't there at launch. For GT7, there will be future updates that include more of everything we have now, and that makes me excited for the future of the game, not upset that people who play it ten+ hours a day are running out of things to do.
The upset is certainly warranted when it comes to the economy, server downtime, microtransactions, and the reigning in of money earning races. These are things that will hopefully find some resolve, and I'm confident that things will get better soon.
I am overall satisfied with the game, and some of that falls on the fact that I'm busy enough to not be able to hammer out full days of play (I'm only on book 14), but the amount of things to do in this game is still a lot, the positive aspects (the majority of what it is) of it are still amazing, and there will be more for those of us who believe in the franchise.