It is not that simple. As if it would, it would be an old story, everybody knows.
In some cases, when the DF is low, as it is often with Tube amplification, a thick and short cable won't help.
For amplifiers with other than A or A/B class (like D-class) it is also not applicable. So it is with none coil speakers (as ribbon).
For the main stream, that do use A/B class and coil loaded, there is a formula to get an optimum thickness, based on the DF and cable length.
However, it is most recommended to have the optimum thickness and length recommended.
Getting thicker or shorter or both, above that optimum, would cost more, but not be of any sonic benefit (improvement).
It is rather recommended to keep the cable shorter, than get it thicker due to its extra length.