It's probably easier and cheaper to build new instead of dealing with whatever type of remediation would be required at a closed industrial site. Hard to say what sort of pollution/contamination you could be on the hook for if you come in and try to take over a site like that. Asbestos, oil and chemical leaks/spills just to name a few.
He/him
Kayak fishing in a Native Slayer Max 12.5
Lowrance Elite 9 ti2
2022 Skeeter ZXR20
Yamaha 250 SHO