To the OP - you are certainly within your right to post your opinion. And it seems that you understand if you don't like something, don't buy it. You cast your vote with every purchase you choose or choose not to make.
The term money hungry here is absolutely correct - all for profit corporate entities are in the business of making money. Think about the developers, artists, designers, etc that work for the companies that developed GT5: chances are nearly all of them made a significant time and financial investments within themselves to acquire the skills needed to make such a great game. Long story short: everyone associated with the development of GT5 wants the game to make money, not just the board of directors.
In a perfect world, everything would be free. Trust me, I'd love it that way! However, that's not how things work. Had profit motive (i.e. the opportunity to make money) not existed in the first place, than GT1 wouldn't have even come to fruition.
I respect your opinion. The only thing that I ask is that you remember what a GT5 disc by itself gets you. Over 1000 cars (the most in a GT game ever), dozens of tracks, the ability to play online for free, updates for free that correct the bugs, and great gameplay with one of the most advanced racing games ever created.
By contrast, the last GT game I bought was GT3. Awesome game but nowhere near as good or as large as GT5. Also, there was no DLC, no patches to fix problems, and no online capability (unless I'm mistaken). If I recall, GT3 cost the same price as GT5 upon initial release and that was nearly a decade ago. Taking into consideration inflation and technological advancement, getting twice the game at a price of GT3 years back (no inflation!) is a great deal!
So far I've spent $75 US this year on something that has entertained me for hours and made me a few friends. To me it seems like a great value as I know I've wasted much more on far less - I know that I've spilled more than $75 of alcohol on the floor in 2012!
On a final note - the concept of DLC to me is great, when its done on GT5 fashion. I'm not hot on how Call of Duty does it but its still better than how I grew up with video games - if something new had to go into the game, that meant a new cartridge - Street Fighter II* on the SNES anyone?!
That's just my two cents on the matter. Don't expect you to agree with it because your entitled to your own thoughts. Just hoped that I helped put things into perspective; if not please continue to support GT, PD, and Sony in a manner that you are comfortable with.
*Sorry, I love the SF franchise but they've been horrible over the years! I've learned not to buy the "new" SF game right off the bat! Also sorry for the long rant.