I tend to believe that any laws requiring that corporations not transact using cryptocurrencies, period, would have extremely broad effect, much more so than at

I tend to believe that any laws requiring that corporations not transact using cryptocurrencies, period, would have extremely broad effect, much more so than attempts to stamp out the (surprisingly inelastic) demand by individuals for substances. Just imagine all of the perpetual accounting fraud and ongoing OpSec that would be necessary to cover up its use at the corporate level! Drugs (and yes, earlier, alcohol) present kind of an unique situation with respect to noncompliance with the law; not sure I can see the case for suggesting the government is destined to fail in enforcing the prohibition of anything whatsoever.