Basically, I think that without wealth, Trump's influence and power would be reduced (money makes the world go round). I know a number of people have: cancelled reservations at trump hotels, stopped going to his golf course etc. However, there are likely business that fuel his personal wealth that are publically associated with him (i.e. don't share the trump brand). A comprehensive blacklist would be very powerful and could lead to a sustained boycott effort (sustained = successful!) Also, if we could identify business/organizations that have supported him (particularly after the billy bush tapes) I would love to boycott those organizations as well. Basically I don't want to give Trump (in any way, shape, or form) a single cent.