That's just for a single player point and click adventure game. RSI is making something vastly more complex and intricate and their kickstarter netted only 2M USD. I am not at all surprised by their "money grabbing", they no doubt NEED that money.
I just looked at their kickstarter which said 2M, but on their site they are now up to 36M invested.
Yeah, I dropped in whatever the cheapest option was with alpha access in the early days. I wouldn't have put down money had it not be someone with his level of success and experience. And by no means am I saying it will be a success, but I would't have dropped for a guy like Curt Schilling http://www.celebrity...o-game-company/
I do have to say, after looking at their site a bit longer and poking around, they are doing a pretty good job about providing content for the community while the game is still in development. Multiple podcasts/video-blogs/dev-blogs reporting on what they are doing, how it's going and community ideas.
Doesn't guarantee anything obviously, but a lot better approach then "thanks for the money and lets hope we can turn out a good game in 3-4 years time, cya guys then"