So far - other than HF for regional communications support and e-mail over radio (WINMOR/PACTOR) during local loss of infrastructure, our VHF/UHF capabilities can be had -largely- using off the shelf, unlicensed or easily licensed products and little training, allowing emergency volunteers who are not hams, to intercommunicate.
There's a lot more than knowing how to push a PTT button to emcomm. You can hand an FRS talkie to anyone on the street and they'll know how to use it for simplex comms with another person. Ask them to pass official traffic with it, operate on a net, coordinate PL tones for different task groups, or even know what line-of-sight is, and you've lost them. Not to mention there is no such thing as an off-the-shelf unlicensed repeater.
Ham radio isn't just about knowing how to operate the equipment. The service we can provide is knowing how to operate it quickly, effectively, and efficiently to get information from A to B, without relying on communication infrastructure that is likely to be either down or oversaturated in times of crisis.