I don't think it'll motivate people to start up a company any more than "the replacements" motivated people to be pro footballers. I think it might get people thinking about ideas, but in the end, it's the execution that counts.
Whilst it's always great for society in general to have as many innovators as possible, I think movies like this tout the "sexy" idea, instead of the grind-it-out reality. As soon as people who were inspired by a movie notice that fact, they jump ship as quickly as the hopped on.