The whole affair was very difficult, perhaps only Apple could do. He developed a large RISC processor on a computer / laptop where in the past only CISC processors were in control. There have been small jabs at RISC in the past, Apple has had colors based on the IBM Power processor for a long time, but despite its persistence it has always been broken by Intel.
Now bringing the 5mn process to a computer / laptop that absolutely kills its power per watt, as well as the M1 is a fully processed standard. This move was not easy, but it was worth it.