I knew what I was buying when I purchased GT Sport. An ongoing project with the promise of "free" dlc after paying the fee of what was only on the disc. There were no illusions of this being a full GT sequel. And I knew, at the time, the game wasn't for me, and it might not ever have been. I held out because of what was on there was not sufficient at the time. However, I eventually bought the game for £15 on the day of the release of the Le Mans update, as that was the hook for me, after patiently seeing PD come good on there promise of a steady stream of dlc that was piquing my interest. I sympathise with other GT players who were hoping for something else, but maybe they made an impulse buy based on the GT name and previous sequels, and wrongly perceived at what they were hoping for, rather than actually seeing if GTS offered them what they wanted? And also strongly being swayed by having that need for GT game on the latest PS console can be a very strong pull. Especially it being a Playstation flagship series. Having played the GTS beta and demo and reading a lot about it, before and after release, I knew it didn't offer me enough of what I wanted, and decided not to buy it. When it did, I bought it knowing exactly what I was getting, at that exact time. If at this point you still don't think GT Sport is the game you wanted, then I simply think made the wrong and hasty choice. I myself made an impulse buy with GT6 and my fingers got burnt and I learnt my lesson. And yet I am sure others here enjoyed it. Yes, blame can be laid to some extent at PD's door - the game does have some shortcomings - but no game is perfect. And in this age of internet, details about upcoming games are readily available for buyers to make an informed choice. The dlc content was never set in stone. Luckily for me (and just by chance) I enjoy the content of the monthly dlc. The mere fact it is the complete opposite for some others here is a clear indication you cannot please everyone. In a ideal world this would have been a GT7 with 500+ cars and 50 tracks, a proper GT mode, proper tuning, etc. Because that is what GT was and what we were accustomed to. Maybe that game will come one day? And maybe it will bring more of us all together feeling more satisfied. But that was never promised with GT Sport. That was also another type of game that I wanted, but I always knew that is not what we were going to get. GT Sport for me fills a different gaming void. One I think others don't possess, which is completely ok.
Conclusion: This is a GT racing game. This just isn't the typical GT racing game we have seen before. Prime and current example: Some people like the Forza Horizon games and not the Forza Motorsport titles, and vice versa. The differences may be more pronounced than GT Sport to previous GT titles, but the point is still valid.
I hope my point was clear and understandable. With the new FIA GT Sport season to come I hope PD do include some new dlc to change your mind as they did mine. Just keep an eye out and play something else in the meantime, as I did. Enjoy whatever game you are playing, good people. There are more choices out there than ever before. Make the most of it. 👍
P.S. Sorry for the long post. But I hope you gained something positive from it. And a fresh perspective.