Yes, this is why I think a copyright term of ~7 years fits (for mass media). It allows recrual of costs and it allows participation in media that's still culturally relevant. Further, it allows still culturally relevant works to be remixed, worked on, 'improved' by the populous.
Currently the long copyright terms are not encouraging innovation; the same works are being resold to the same people over and over.
I agree the current copyrights are stifling innovation, and largely leveraging branding.
Marvel, Star Wars, Star Trek to name a few. These things haven't died out because they have people invested in their brand and storyline.
But they also haven't done anything super cool because they don't want to take the risk they might damage their brand. They try to make"reliable blockbusters".
Currently the long copyright terms are not encouraging innovation; the same works are being resold to the same people over and over.