It's really about engineering trade-offs and cost. It used to be the cost of extra logic to allow for devices to work out resource allocation would be much high

It's really about engineering trade-offs and cost. It used to be the cost of extra logic to allow for devices to work out resource allocation would be much higher than the cost of a set of pin-headers and jumpers. Now the cost of those extra pin-headers and jumpers dwarf the cost of the extra logic.