Yes, you're right. The whole power situation (whether laptops or running costs) is going to force change, and a lot of PC users seem unaware of this presently.
That transition, which Mac has largely went through, is going to cause difficulties on the PC side, and if you doubt this it's already happening even before we see stuff like RISC cores. EG Cubase struggling to run well on newer Intel processors, and Korg's OpSix and Wavestate just plain don't work properly on some processors (including my old i7) and there's no sign of a fix in sight.. So the Apple path is looking like the one which will cause me less annoyances..
But ultimately, for those of us who don't care about Mac Vs PC, it comes down to costs. Even though PC's offer FAR better performance value, thanks to electricity costs it's now easy for them to end up costing more. I don't think some people know just how much more either.. A few hours per day can easily add up to hundreds of £/$/€ more in electricity per year.