I'm watching 'The pursuit of happyness'when I need inspiration. Really love it. 'The internship'is another one that can inspire me. But most of all I'm inspired when I get some success with my project
It's not a problem for such big guys as Google or Facebook to create clons of lots of startups. But they usually buy them. Probably because they find them promising or competitory. I guess they are intending to monopolize the market
I understand you pretty well because I'm in the same situation now. So what I've done? I've created something like a prototype using Prottapp (design was made by my wife in Adobe Illustrator). Another tool for this is Balsamiq. After this I'm going to create a crowdfunding campaign for further developing as I don't have enough money for it. May be you can try to do the same