The Tokyo Olympics are estimated to be the most expensive on record, costing $20 billion, according to The Wall Street Journal. The original forecast was around $7.4 billion. Economists argue that there are few, if any, benefits for host cities as every Olympics since 1960 has had major cost overruns. Despite billions spent on infrastructure, many venues fall out of use after the Games have ended. Dive deeper into the huge costs associated with the Olympics and how to possibly rein in spending.