Sure they could. They could have put a G5 laptop out back in the day too, but it would be crap.
x86 has plenty of advantages:
x86 has plenty of advantages:
- intel has the best fabs in the world - whatever you may think of the architecture's history, fact is, it works and in terms of cpu throughput per watt, it is right up there (for cpus that have anywhere near the performance)
- x86 sells way more cpus, and gets "economy of scale"
- the powerpc was unfortunately not competitive in the mobile arena, and IBM/Motorola didn't care about the tiny market that apple had in that sector enough to rectify that
- having cpu/architecture in common with PCs means you can do things like bootcamp, get better driver support from third party hardware OEMs who aim thair hardware primarily at the PC, etc