A long out of print book is sold at a second-hand book store. Sold, not given away.
If I buy a book, and give it to a friend as a gift, is that wrong? Is any bought item given away as a gift then wrong? Yet, if its a bundle of ones and zero's, that turns it into an 'act of piracy'.
The company is gone, usually, the item is not available- a program, a book, an old model kit; you are not profiting, and conserving a body of work otherwise lost. And yet, whole industries make their living selling things that somebody else made and sold.
I get the same thing with converting public domain-that's what 'freeware release' is-models to latter sims for conservation purposes. Some 'developers' are particularly venomous if they feel you might be somehow 'wobbling' their rice bowl. I'm not profiting, I work at a total loss, in fact. But the body of work is conserved. There is a lot of silliness at times in the electronic world.
You decide.