A naïve question: Couldn't other ARM licensees just integrate RAM into the SoC like Apple did and come easily close to M1' performance? With easily I mean in a

A naïve question: Couldn't other ARM licensees just integrate RAM into the SoC like Apple did and come easily close to M1' performance? With easily I mean in a doable manner within 1-2 years. I know there are more tricks/magic involved but just to start somewhere.