Do you really think that the price of bitcoins has anything to do with it's "development phase" to be called "developed" completely?
I think, No. The price rises due to the demand and adaption and not any different things.
See, that is the problem right there. Many people here are very unsophisticated. They can't discern the difference between '$14 Billion investment' and '$14 Billion valuation'.
Because these very stupid people can't understand these very different concepts, they just keep on buying, and buying. Thus, we have a 'natural Ponzi scheme'. Bitcoin offers no utility nor function to anyone. It is simply a 'buy and hope' speculator's tool. There is no revenue. There are no earnings. It is just a more inflated 'market cap' day after day. A total Ponzi scheme.
Bitcoins are not ponzi, but should rather be called experiment here, an experiment which gave birth to something revolutionary which ended the boundaries of the world and brought users like you and me here to discuss about it, same is the case with the technology called blockchain, which according to me is a tremendous thing and it came out just because of bitcoins, so I think that calling it a ponzi is not a good way to honor its inventor's efforts.