I’m not sure exactly on the time frame but I think the more likely scenario is that Amazon buys out Fed Ex and becomes a dominant competitor.
Amazon is a company that will do its best to get cheap labor so I’d expect you’d maybe have better management and I’d imagine more flexible hours. Perhaps have a lot more staffing with less benefits and subpar performance kind of like the employees at Walmart’s.
Delivery would be done with their own vehicles and service wouldn’t be as much as an issue. Not sure how Amazon would handle over 70’s and big bulk but I’d imagine they would have a few trucks for the bigger items. I don’t think Amazon would do the more rural areas either, probably leave the crumbs for UPS to handle mostly because the rural areas aren’t profitable