One can use the USD as savings and investment vehicle by buying US treasury bonds. Isnt that what most of the global savings glut does? Other currencies are either not safe or their associated government bonds have zero or negative yield.

When we get bitcoin bonds with someone (who?) paying interest and OPEC accepts Bitcoins for oil then perhaps we have a currency contender.

But then again, Since data is the new oil and bitcoin is bits (data) perhaps it is the oil! Need to flush that out for myself.

Good discourse Professor Damodaran. Had your asset valuation book for Fianance class in my MBA at IU Kelley School of Business.