Yes and no. Sure that's what usually ends up happening at the "large scale" level, but at the individual level it's much more problematic. People have things they like, have built their life/career around it, potentionally made huge investments. Many will not want to give up their investment, lose the ability to do the job they love, and/or may not be interested in whatever's replacing it for them to be willing to change careers.
It seems you love drones, so just imagine that you're all hyped and motivated to do tons of cool things with them, start one or more businesses around them, invest millions, that's become all your life... and in 15 years someone comes up with something new that doesn't interest you but is going to make your stuff and passion redundant...
New fields are always cool for those in front of the curve, it's new jobs for a few who didn't have one or are very flexible, but it's also a mandatory change for so many other people (probably the majority of standard population) who were perfectly happy with things as they were, didn't ask for anything, and may not have the desire or ability to adapt.