Majority of Bitcoin's value comes from speculation rather than fundamentals (scarcity and utility), we can see it by how much the price moves without any change in fundamentals at all.
Bitcoin fundamentals are not just scarcity and utility but the evolved technology, community and the network, as well a the established methods of this evolution. It is nearly impossible to duplicate this evolution of miner infrastructure, community support AND decentralized decision-making. The fact that bitcoin is here is here to stay.
The next fundamental that all the "business" people cry about is "utility on blockchain". This is where success of LN becomes all the more important. If the LN infrastructure gets going, it'll mean that the tech has matured to a level where a layer-2 utility can use the security of base layer. The use there-on is limited only by the acceptance of bitcoin's advantages by the people and developers. Instead of hating on each other, people can just accept bitcoin as it is and work with it instead of against it.
It is the same why does the fiat currency has value because today most of the people are using the fiat currency for making transaction and by the creator of the bitcoin he wants to make it more digital currency so all of the transactions today are we can do by the help of the internet world or the cyberspace now this is the most use transaction and they are now supported the conversion of fiat currency into cryptocurrency that you can convert your money into the digital world that you can now pay a lot of things through online without using physical money it has a value because it is the same like the fiat currency today.