Using their position of political power to advertise a business which directly benefits them. It is plainly not part of the duties of the office. Same reason good presidents put their financial affairs in a blind trust for the duration of of their term.
Profiteering is the wrong word.
Instead, crony capitalism, abuse of power, or something else is more appropriate
how exactly are they abusing their power with this one?
Using their position of political power to advertise a business which directly benefits them. It is plainly not part of the duties of the office. Same reason good presidents put their financial affairs in a blind trust for the duration of of their term.