Thank you so much for posting this @anyx, because it makes me understand your perspective much better.

As a creator, I view it a little different. I make content and change parts of it for different platforms that have different audiences. I might post the same piece of content on Facebook, Instagram, YouTube and LinkedIn, but with a slightly different intro or tekst, tailored to the audience of the platform I'm posting on. Often (not always), these are pieces of intellectual content which provide value for my following. Some posts score better on one platform than another, sometimes I don't post the content on a certain platform because I don't think it will provide the proper value.

When it comes to double spending I trust the system. If duplicate content is continuously posted, your fanbase will stop actively following you intensely cross-platform, because it is the same. Also, if you duplicate an item from a news website, without making minor changes using language and examples that fit the Steemit community, I will not have the same power. And if the content is good, why shouldn't the auteur be rewarded twice. It doubles the exposure for both the creator and Steemit as a platform, without letting the creator choose which platform has sole ownership to the content.

For me, taking away the opportunity for crossposting would mean that Steemit as platform puts the creator under pressure to make content for one specific platform, which 1. provides us with less freedom (sometimes resulting in less creativity), 2. puts Steemit in a position of power as sole owner of exclusive content.

Now, don't get me wrong. This is not necessarily a bad thing. It decreases opportunism and often results in better quality of content. But it also runs the risk of losing good creators (because you made them choose) and the position of power (which goes against the decentralization of power, which the blockchain strive towards) might make Steemit a slow bureaucratic overvalued commercialized powerhouse that bases it findings and decisions on research of a small intellectual elite.

I'm all against copyright infringement, especially intellectual property theft. But in the end, everything is a remix and getting sanctioned for remixing my own intellectual property, because I might earn twice, is no fun.

Hope this perspective provides value to you. I'm very open to discussing this topic further in the future.