It is reasonable to grant a visa for education or investment but granting it by chance seems odd.
I'm not sure if any other country does the same but there should be reason(s) for this (except giving a chance to people from undeveloped countries to have a better life). Some guess:
- A scientific reason could be bypassing human-made rules (visa rules) which may prevent special kind of people come to U.S, in this interpretation lottery visa acts like what mutation does in biology.
- A reason which if mentioned may cause my first question get closed.
Is it known to public why such type of visa is offered by U.S government (benefits for U.S not immigrants)?