ARM based Macs: It's back to the future in a way

[MacArtist]

So what is the real benefit from switching Macs to ARM processors? Is it cost savings so Apple can compete with Chromebooks?

Is it part of the plan to consolidate separate operating systems, no more macOS-iOS?

Is it a way to end the not-so-covert Hackintosh experience?

Apple developers have been put through many serious changes. I wonder how many will call it quits developing for the Mac platform.