Maybe I'm older than you, but I remember being worried about those newfangled bulldozers making us ditchdiggers obsolete. :)
Or how about movies making stage actors (and set builders, etc) obsolete? I mean, when you only have to act it out once and millions can see your performance, as opposed to actors performing shows every night in small venues in towns all over the country, it puts a lot of people out of work. There are pretty few people today making a living as actors.
And of course photography put portrait painters out of work. And high quality cameras in cell phones probably put a lot of photographers out of work.
What might happen is that there will still be actors, but all they have to do is act, not be beautiful. They can use a model for the beautiful part. And then you can have talented people on computers merging it all together.
I do like the idea of bedroom production of movies, which can happen if you don't need actors. Previously, if you want to be a film director, you needed to be born into a rich family, and then after extremely expensive film school, you needed to get big money to finance your movies. So there's that.