Disappointing **SPOILERS**

I agree with you. I liked the movie up until the credits started rolling. I enjoyed the dry humor and the characters that carried the movie for about an hour. I even liked the conflict that developed and how it turned more dramatic later. The main character was pretty sympathetic and comandable throughout despite taking advantage of people all the way until the end. I kind had to cheer of him a little and his drive for success despite clearly not having what it takes. That scene toward the end when he was doing one of his last presenations and they asked about what the market share is, the market share is...awesome...and then break into a scene from Dead Poets Society. That was brilliant.

You gotta feel bad for the guy and admire his will to make something of himself. But i dont get what was going through his head at the end of the movie. Why go out completely on your own? I guess the ending meant that he was a stubborn failure since he didn't achieve anything with that belt and noone ever saw it again. But was the belt worthless to begin with and he was fighting an impossible battle he could never win? They made it seem that way to me but then why did Paul Giamantis character want that belt so bad. It had to be worth something. I understand the selfishness, i just dont understand why the main guy choose that over at least a shot at success. He asked for the help to start with, and he was looking for more help (investors) as the story went on, so i dont get his motivation to cut everyone out for what seemed like no good reason.

To answer the question: Why couldn't Rick have just built another rocket belt?...

He probably didn't have the money/resources or he assumed Curtis was right that he couldn't sell it on his own anyway, so he was counting on suing him.

And to address the question: "Why didn't someone kill him?"...
Yikes! I hope that's not how you resolve conflicts :). I know what you mean though. Maybe because only he knew where the belt was or maybe, again, because they wanted to sue him or use him somehow to get something in return. But, hey, maybe they did kill him--we don't know what happened after the last scene, right!

I was also disappointed by the way the movie was ended--I didn't need for everything to be resolved, but I also felt like we were left hanging for no apparent, artistic reason.