OnePlus one, Flagship killer?

As the CEO of OnePlus said, Their One was the Flagship killer. However I don't think that's the case. Well sure, It features High End specs like Snapdragon 801, 3gb ram and Full HD display. I personally think Oneplus lost their chance of taking over the smartphone world with their one. I'm not saying its a bad phone, in fact its the best phone you can get for 300 Euros. You wont be be disappointed with the phone, If you can get your hands on it. I said Oneplus lost their chance of taking over the smartphone world, It is purely because the lack of ability of the phone itself. Nothing wrong with the phone. Oneplus is using the invite system. It is, well you will need an invitation to buy the phone, once you buy the phone, you will get 3 invites to share... sounds easy right? No it's quite hard to get an invite, to obtain an invite, you will need to be an active member on the forums or win a giveaway. This is my opinion on why the oneplus one isn't the flagship killer. What are your thoughts on the phone?