> The economic benefit they provide to content creators is the financing to be able to create the content in the first place
Music, video games, application/software development are all areas where this is completely false -- very minimal financing is required for any of this and we already see a growing, open media landscape as a result of it. You seem to forget the capitalistic tendency for market potential to dictate the cost of services as well.
That is to say, Hollywood movie budgets are extremely over-inflated because of the monopolistic business models that guarantee them capital they do not require to finance the creation of content in the first place. Actors, directors and writers do not require millions of dollars to write or produce this content anymore. A market for its production -- or at the very least a social imperative -- would exist regardless of this artificial establishment.
Walk through this with me:
* it costs nothing to distribute the content anymore (in stark contrast with even a decade ago)
* it costs very little to create most content, and where it does costs a lot, it's mostly because of copyright's existence
* it costs nothing to market the content anymore. Social media is in a dominating role.
Copyright depended on all of these factors being completely opposite. It depended on some cost for creation, or more broadly, some quantifiable scarcity. It depended on a publisher -- an intermediary -- to connect the consumer with the creator. It eventually depended on advertising and extremely competitive marketing as well.
The realities of 21st century communication and technology simply are not compatible. Financing the production of works by selling the right to copy it is absurd in this economic climate. It made sense when publishing was a capital-intensive and narrow industry, but it now forms the basis by which many people communicate today.
Instead, works should be financed by the public interest in its creation. Nobody has to pay more than they want for their "copy" of the "intellectual property", the artist is subsidized as much as they transparently request, and perhaps an arbiter is compensated under contract.
Regardless, it is unenforceable and ultimately counter-productive to support copyright, just about anything could be better.