Is it hard to sell half a company you bought for a $1? Seems like more of a psychological problem than a technical one..
I mean sure the whole market could realize your purchase was an absurd liability, but they would still be immune as long as they only own their fraction, so unless the whole market prefers your bankruptcy over a free bet..
And probably other folks more knowledgeable on how Hollywood legalities work can confirm a similar taboo exists there.