...and about the rumored transition to ARM, first in laptops, I'm not so sure. I don't think it's a good idea, but Apple just might be crazy enough to do it. Two points:
1. Don't count Intel out. Their foundry might be suffering right now, but their design prowess has not failed. They might be stuck on a process twice the size of where TSMC is at, but the Core-series significantly out-performs the A-series (despite the significant gains made). If Intel overcomes their manufacturing issues, watch out.
2. At the office, we have 8 Macs. Only 3 of them run MacOS. The other 5 are running Windows or Linux. People don't always buy Apple hardware to run MacOS. Obviously we don't buy servers or workstations from Apple, cause they don't make any, but of the things they do make, they make really good ones, and the "Apple tax" is fiction. We know, we also buy product from HP, Dell, and others... Anyway, if Apple drops Intel, we'll probably have to drop Apple as a hardware supplier. It's not a criticism, it's just reality.