I don’t think they’re that similar. Gene Wilder was a comedic actor; his characters usually had some depth and poignancy to them. Will Ferrell is a comedian; he usually does caricatures (which is fine, but it’s different and more in your face)
I didn’t mean Gene Wilder got there first so no one can touch him. I’m saying since he did it first, he inspired and made it easier for someone like Will Ferrell to do what he does.