The United Nations has long sought the ability to raise revenues in this manner as a means of reducing its reliance on American and other member nations' dues to sustain the UN's operations.
From the employees' standpoint, in 1935, Social Security was a big gamble. Employees would be required to participate in the program, contributing a percentage of their income for their entire adult working life.
I never looked at the consequences of missing a big shot... when you think about the consequences you always think of a negative result.