DISCLAIMER: I'm not sure if this the correct StackExchange site to post this question on, so please let me know if it could be placed in a more accurate forum.
With my limited understanding of domain names, I'm unsure as to how the ownership and purchase of domain names occurs. With the incredibly large number of potential domain names, it has to be assumed that there are more than zero domain names in existence which have not been purchased yet. Therefore, does that mean that they aren't owned? If so, would I be able to theoretically "acquire" said domain names without purchasing them, considering that they aren't anyone's intellectual property?
Thanks in advance