@ossobuco,
I suspect the point of concrete between the trees is lack of providing expensive irrigation - there are new smart irrigation ways) and lack of need for maintenance (e.g., weeding, removal of dog poop, and so on).
Meantime, we have allees of tortured trees.
There is, I think, a limit to my being able to post in a row on this..
but, rjb, I'm not against your plan.