What makes you think there still will be x86 Macs in 5 years? (we're speaking about new Macs right?) If Apple still made XServe I would agree but here I don't

What makes you think there still will be x86 Macs in 5 years? (we're speaking about new Macs right?) If Apple still made XServe I would agree but here I don't see why they would keep x86 in their lineup.