RE:Cannabis not MarijuanaActually what you say is false, as in, not true at all to say the least.
Marijuana is consumed by all social classes and I can vouch that people of means have access to better and more expensive products than marijuana. Consumption has nothing to do with social class rather with preference.
Marijuana is a depressant and cocaine is a stimulant. Generally speaking, consumers prefer either, or, not both unless it's to counterbalance the effects.