The choice to release work into the viral market is a business decision creators should have the power to choose, not a mandated requirement for funding. Some may decide that they will profit and gain more recognition through releasing their work into the creative commons, others may not. It should be remembered that Ordinance Survey was originally mapping for military purposes rather than for the general public so it might very well have decided that there is no reason to have its data open to the public and it would pose no benefit to enable to public to use that data for modification.