Since this is a matter of public interest I think it is fair comment to say that the above article is pathetic. It is a defence of the current British government’s craven capitulation to the current Russian administration’s demands for immunity from legal claims over the current show of art from Russian in London, some of which may have been looted by the Soviets during World War II.
Quite apart from anything else, paintings are autographic works and unique objects, non-fungible physical property. Play scripts are allographic mass-produced commodities, replaceable items. They do not compare, and any defense of theft of the former based on the spectre of privatisation of the latter is at best utterly flawed.
There’s more, but honestly. When the author’s house is next burgled I assume he will just put it behind him rather than denying the world access to the cultural wealth he has hoarded.