Anything digitally distributed has no value once it's been purchased.
I assume you mean no resale value because otherwise what you just said is all movies, games and music are inherently worthless outside of the price tag applied to it and you place no value on the entertainment of the product or accessibility to the product.
I bought Red Dead 2 digitally and it has a lot of value to me.
value
noun
1.
the regard that something is held to deserve; the importance, worth, or usefulness of something.
synonyms: merit, worth, usefulness, use, utility, practicality, advantage, desirability, benefit, gain, profit, good, service, help, helpfulness, assistance, effectiveness, efficacy, avail, importance, significance, point, sense
You can value something for its utility, practicality and desirability rather than simply financially.