There was a time but I think it’s in the past that guys were getting upwards of $100.00 per second for Architectural animations, but now that everyone and their mother has a bootleg copy of 3ds Max those days are gone. UE4 is not going to bring them back either because everyone that knows 3ds Max and sees a UE4 interactive will jump on the boat.
In addition it may be 20k but did it take 3 months and cost 5K in assets, software, render farms, labor etc.?
If you look at a company like Dbox they do corporate branding where cg is just one aspect of the whole. But they also have a staff of people. There are opportunities for real time presentations in a lot fields - diversity is a good thing.