The issue with delivery services is they rely on the density of city populations... In the Phoenix area most of said services don't exist, and many that have tried have failed. It's a pretty stark contrast to more dense cities, and even locally Tempe has a lot more options than the greater Phoenix area does.

I also hope that similar ride sharing systems take deeper hold in Phoenix... Personally, I really enjoy driving, so seeing traffic become less dense (currently not nearly as bad as the coastal cities by any means) would be nice.