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 think the laws and regulations are the problem that the bitcoin is currently facing. There are people in different countries who are afraid to use bitcoins because their government forbids them to use it. They will be sanction and receives penalties if they will use it. The users of the bitcoin will increase if all of the government will legalize it.