Apple's leg-work on the lead up to this migration is really standing out here. By deprecating 32 bit app support over the past ~2 years, Apple only needs to emu

Apple's leg-work on the lead up to this migration is really standing out here. By deprecating 32 bit app support over the past ~2 years, Apple only needs to emulate 64 bit x86. For Microsoft, 32 bit support is still more important than 64 bit support, but big chunks of Windows applications want 64 bit support as well. Microsoft has had one foot on both sides of the 32/64 bit divide for years and it's making this migration a lot tougher.