The right question to ask here is: "What platform should I use that will get me in front of the most consumers/customers as possible and allow me to create a polished mobile experience?"

The answer to that right now is iOS and ARKit. The reason this is true is because there are hundreds of millions of iOS devices out in the wild right now that have the hardware capabilities to use ARKit and sufficiently power AR experiences.

There is no other comparable platform out there that even comes close to that kind of consumer scale in AR or VR.

This is one of the ways Apple's integrated walled-garden approach has inherent value. They can release something like ARKit and be ensured that hundreds of millions of devices can leverage it on day 1.