Does targeted vs non targeted really have an impact on sales? And if targeted was gone everywhere would it really cause a drop in revenue? It seems (from the l

Does targeted vs non targeted really have an impact on sales? And if targeted was gone everywhere would it really cause a drop in revenue? It seems (from the little I’ve seen over the years) that targeting doesn’t have much impact. And that advertising budgets are pretty fixed as a percentage so revenues wouldn’t go down if everyone had to stop targeting.