No reason the ships can't be built but turning a profit is another thing. US nuclear-powered aircraft carriers cost ~$10 billion, though of course they have man

No reason the ships can't be built but turning a profit is another thing. US nuclear-powered aircraft carriers cost ~$10 billion, though of course they have many other requirements. Flying to the Moon can be made to work - it's been done for 56 years. But turning a profit is trickier.