As it stands right now, you need over Cr.277 million to buy one each of 360 of the 424 launch cars, now that you've finished the Cafe take a look at how much you are earning on average a day. How long do you think it's going to take you to own even 3/4 of the cars in the game?
A fair sense of progression once the tiny single-player mode is all people are asking for, to then be collectively labelled as "moaners and complainers" is innacurate and frankly more than a little insulting.
You may have hours a day, every day, for the next 5+ years to dedicate to grinding out the required credits. Many others don't and the glacial rate of earning in GT7, combined with the FOMO design and inability to sell cars, make it all the worse.
These are not moans and complaints for the hell of it, these are perfectly valid issues about a game economy that increasingly looks geared towards pushing MTX's onto people, a feeling only strengthened by todays update nerfing the highest earning events.