I guess we need to ask: what agencies are to be appointed for the purpose, and what are their role? As on earth in practice, resources will run out long before any approach to perfection.
My admonition to churches is to get back in the gospel business, and that means if you need to raise funds and privately negotiate with pharma companies to git-r-done in the name of the Lord, then DO it... but God must get the glory here.
The billions of pounds the UK spends every year maintaining the royal residencies and providing for their lifestyle would pay for the care of thousands of sick children.