This hobby, and link to possible career choices is not going to go dead. It will only change with the times, as it has continued to do over the decades I have monitored, collected and worked within the industry. Now, I just keep a spare computer and SDR# running along with my various scanners and radios, some of which are affiliated with radio networks I deal with in some way. Streaming online works for some, others it is still building their own receiver. In my case, with only a few pockets of digital and encryption in use, I have gone back to old shortwave and scanning receivers.
Picked up a great Halicrafters R22S recently, and tested it right there in the thrift shop. Several people were amazed that a 1941 receiver could still work, let alone tune into local AM radio stations. It even sounded better than the AM side of my current car stereo. That site might have influenced others in that store, as they had several other receivers, to include several Realistic/GRE/Radio Shack scanners. These were older analog only units though, Pro-2004/5/6/2032/2040's that looked pretty beat up and possibly from the homes of people that smoked by the yellow tinge on buttons and displays......none of mine have gone that color yet in comparison.
Scanning will not die out, and with all the prepping videos online, may become more prolific in some circles.