It seems that calling their bluff on proof of ownership is the only way to get a straight answer as to who, if anyone, legally has the rights to license
It seems that most legal battles are won by those with the deepest pockets but anyway, I do agree. If someone (and I don't think there is anyone who would qualify) had the $$$ to mount a decent legal case against the ROM/WB legal position it would be shown that nobody really owns anything much.