the price of bitcoin has been changing dramatically, and many people have invested in bitcoin. And they get a generous return. these stories attract more people to join Bitcoin. in my opinion, this is precisely an obstacle. It is an obstacle for Bitcoin to be used on a large scale. It requires a stable value for a currency that is used on a large scale.
I believe that the main restriction on the use of bitcoin is the public. She is not ready to accept this new technology. Plus the state put a spoke in the wheel. For further introduction into public life, cryptocurrencies and their technology must go through many stages of development. No good technology is not implemented immediately. Look at the history of cars, phones, computers, etc. Will be 3-5 years and we will see the results of the implementation of cryptocurrency into public life. I think these results will be positive.