Apologies, I intended incapacitation as not unconsciousness, but finding a narrowly-tailored way to prevent the offender from re-committing the crime, in order to protect society. Ultimately, rehabilitation is the answer on how to do that, but until rehabilitation is completed, some manner of incapacitation or restriction is necessary.

I don't know enough about SBF's crime, which is very complex. But for white collar crime in general that isn't wanton indiscriminate violence, imprisonment seems like it is inherently punitive and thus wasteful, unless it's in a place that is highly focused on rehabilitation (education, therapy, etc).