Question

In the past I saw that the Rabbi wrote that a person is considered the owner of an abstract creation, such as a song and the like. At the time I asked that apparently it is explained in the Talmud in Beitzah that a person does not have ownership over a flame, as it says there that the laws of consecrated property do not apply to it, and likewise someone forbidden to derive benefit is permitted to benefit from a flame. Simply understood, this is because there is no ownership over something that has no tangible substance. I do not remember what the Rabbi answered about this issue. Maybe something along the lines of “his fire is משום his arrows,” but I do not understand the matter. Thank you in advance.