That doesn't extend to things that don't require support and maintenance services after publication like music, movies, games and such. For software that needs to be maintained and trained, sure.
There is already an abundance of (in descending extent) music, movies and (computer) games. Even in the latter category, if none were produced evermore, I would have more to play than I could over the rest of my life, especially as I can well cope with the graphics of "major" commercial games produced over the last 20+ years. Even without that, there are so many other forms of entertainment that life for almost all would still be just as good without new music, movies and games. Of course, there would still be
some production of these things without commercial incentives -- indeed, the lack of commercial offerings would give a motivational boost to non-commercial products (if there were no commercial games, I image there would be more FOSS games). Also, in countries like the UK, there is the BBC (or an equivalent organization) that receives public money to produce news and culture.
I am pretty much a copyright abolitionist. The only argument to give me pause is that given by the FSF: that without copyright, software (as a special case) would become less free (unlike almost everything else) as, for example, a modified Linux kernel could be redistributed without source and reverse-engineering it would be so prohibitively effortful that we would have vendor-lock-in again. This is a legitimate concern. For me there are two possible solutions: firstly, a compromise, with copyright terms lasting only 5 or 10 years (long enough for software, but not really long enough to damage other forms of work -- i.e. I can wait for the latest and greatest music or movies, even 10 years, or I can pirate) or, secondly, full copyright abolition with one additional law: no hardware or software may legally by sold or given without accompanying
complete documentation (decently commented or non-obfuscated source code would count as complete documentation).