But you had to change the pie. There is a reason you were buying that specific pie and not an other one. If you changed it's because you had to settle for less (subjectively).
Sure the local one will gain market share but only because they received outside help. Not because they truly were the best choice.
If it was really that simple, then the US should put a 100000% tariffs on t-shirts to be sure they are all made in the US. We both know that would be a terrible idea.