$80 Million does sound very high.
Iirc, if you want to assign a value to intellectual property, it's supposed to be the present value of the anticipated future earnings.
IMO, CoH/V had value the day before they announced it would close, and I think it would have dropped like a stone after that. The more resistant they are to reviving, reusing, or re-purposing it, the less value it has. I'll grant that people grossly over-estimate the value of IP all the time, but there's only so much of that people can get away with.