The game industry is so unstable, it can be nearly impossible to even tell who you should pay for something.
An anecdote: Master of Magic is one of my favorite games of all time. The company that made it was acquired; the acquirer, I think, shut down. Anyway, the upshot of all that was that the source code was literally lost. Nobody has ever found it, and people who wanted to mod the game had to do it in bytecode.
Even the license was sort of lost for a couple decades; a known company owned it but they were too large to care about deaing with this old, niche license. A few years ago, someone (Slitherine) finally persuaded them to sell. A remake of the game was then able to be released commercially, and a sequel is in the works. But it took over 20 years for that to happen.