Blockchain is an important technology, but it is not the only direction and unique technology of the internet in the future. The development of blockchain is constrained by computer hardware, subject to the user's mentality constraints, and the application is also subject to the constraints of the agreement. It is also subject to the constraints of the internet's structure. There is no problem to develop blockchain technologically, neither is there any problem for it to become popular in technological investment, yet it would preposterous to develop it comprehensively nationwide. Even if this is done, it would only create a few more new internet giants. The fundamental trend of internet technology has exacerbated monopolies, not the other way around.