One of the cooless by-product of the Apple strategy is the unification of the processing unit among its product lines, leaving the form-factor the unique differenciation attribute.

Previously there were many people who wanted a laptop, but ended up buying a desktop because it would be more powerful. Now the only choice the customer has to make is whether they prefer the MacBook or iMac form-factor, because the internal hardware is the same in each. Source: Apple execs praises how M1 enables same performance for different devices in interview - 9to5Mac