Regardless of the moral issue, dishonesty in advertising has proved very unprofitable.
Counter-Productive
Flopping shouldn't get you nowhere.
Inexpedient: Not calculated to advance one's interests.
If history is deprived of the Truth, we are left with nothing but an idle, unprofitable tale.
It is a poor sport that is not worth a candle.
We can't dwell upon another's ingratitude without using up our time and talents unprofitably.
The most expensive way to do business is to do it deal by deal, each of which is highly contentious.
One hell of an outlay for a very small return, with most of them.
Negative energy is wasteful.
I am not a saleable commodity.