There is probably billions of dollars worth of artifacts in the Vatican Archives. I also would not be surprised if some of the lost art from WWII made its way into the catacombs beneath the Vatican.
Francis whining about capitalism has about as much credibility as Bruce Springsteen singing about the plight of the blue collar worker.
I’m sure that the Saudis would pay a pretty penny for St. Peters. Would make a wonderful Mosque.