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 don't think the price of bitcoin has been its obstacle but the main obstacle of bitcoin is the wrong knowledge and understanding people have about it. If people really have the right knowledge of bitcoin, they will be less concern about the change in its market price. Bitcoin and its blockchain network introduced a decentralized platform where people can determine the price they want to sell or buy bitcoin and this nature of its network is the cause of the changes in its price. People don't understand this principle regarding bitcoin.