SMS Budget isn't the only thing to consider. The main thing about Project CARS is that it is a RACING SIMULATOR, not a DRIVING Simulator.
With that in mind, take a look at the average RACING teams..... how many different cars in their garage/shop? 1 model per series they compete it..... 1. Why? Because they don't race a different car at every event. They race the SAME car all season long. Even now in GT6, my league has seasons of 16 race in length. Each driver is in the same car for those 16 races. This is the world that Project CARS is trying to replicate and simulate. Not the "different car in every scene" world of the Fast & Furious movies.
Having said that, most racing sims that I have had over the years have focused on 1 or 2 specific series, such as Indy Cars, F1, NASCAR or GT. Within each of those series you may have had a selection of 5 to 10 makes/models and then a number of different liveries. In the case of GTR2, you were limited to cars that competed in the FIA GT series. This meant BMW, Porsche, Ferrari, Viper, Mosler, McLaren, and Saleen. Did everyone catch that? SEVEN cars!! That's it! Granted, each model had about 20 liveries to choose from. Now here's the kicker..... as I mentioned earlier, I still play the game. Why? Because of the tracks, physics and AI and the overall RACING experience. All of the things that Project CARS has taken and expanded and improved on.
On top of that, with Project CARS SMS have created a racing sim that covers MULTIPLE styles of racing series. Having a Sim that covers Sportscar Racing and Formula racing in the same game is virtually unheard of. Even having a sim that covers the top tier of a category AND all of the feeder categories Formula A (F1), Formula B (GP2), Formula Gulf, Formula Rookie (Formula Ford) is almost unheard of.
As I have said before, most of the car list complaints are probably coming from gamers who have been "born and raised" on the consoles and the types of "driving games" that the console world has been limited to. It's not their fault really, as this level of Simulation has never been seen on the consoles before (even the F1 games had to be stripped down for the moves to console from PC). To make up for the lack of fidelity and control on the consoles the game makers did things like increase the car count as if to say "Sorry, you can't have real FFB or real physics, but you can have 500 GT-Rs!!".
In all honesty, the console players who have only ever experienced Forza, GT, DriveClub, or even F1 games are in for a whole other level of shock and awe. You think the complaints about car count are bad? Wait until they try to drive one of those cars and try the usual "wait until the very last second to slam on the brakes, downshift 3 gears at once and snap the stick left to take the corner" driving style that I see so often in GT6. Or when they open the garage to tune their car and they are faced with terms like "Fast Bump" and "Slow Bump", or "Waste Gate", or a tuning model that ACTUALLY DOES WHAT IT'S SUPPOSED TO DO (like rake settings and camber).
I give it a day after release before we start seeing the "This game sucks! You can't drive any of these cars!" posts.
Rant ends..... now.