old dosnt mean its ok though.
abandonware is not freeware.
abandonware is like..... the industry "implies" that it dont matter what you do to that software, because its a long forgotten name and isnt earning money anyways.
technically its not ok, and the company can go lawsuit happy on everyone, but its pointless and they ignore it.
if for some reason the old game got a lot of hype, like from some mod community that took interest in it, and they thought there was still money to be made in selling the game, they could come back to claim rights.
or if the franchise sold to new developers, and they made a 10 year later sequel, they could claim rights on the old game just out of name property.
its ok to download what is common sense declared as "abandonware" but its a loose term that isnt determined by anyone but us browsing google for it. and may suddenly become not ok the second the owners of the franchise decide.