@NataschaChrobok To go back to the original topic: the ARM switch could be Apples first step of merging the Macs with the iPads. Considering that an iPad Pro has more computing power than a Macbook Air, this would be a logical step.
The problem with Apple is dogmatism. Long ago, Saint Steve said that the mouse on the iPad is evil. As a result, there is no way to plug any mouse or trackpad on an iPad (much less an iPhone).
On the Mac side, Federighi basically said that him alive, never would the Mac be touch enabled.
Now, will ever Apple permit the iPad to have a mouse, or the Mac a touch interface ?
BTW, any Android device can take a mouse. When one plugs one, the cursor shows very nicely, like on a PC.