Would it be possible for CA to share the Gamescom demo publicly to gather robust feedback?

So to start things off, I understand that events like Gamescom are largely, a marketing thing. And I also understand that whatever CA puts out there, has been very likely designed with the intent of marketing.

I appreciate CA is planning a Closed Beta to gather a lot of useful hands-on feedback about the core gameplay aspects like combat, animations etc. But I assume that the Closed Beta audience will be a small fraction of the people actually interested in the game.

However, if CA could share that demo after Gamescom ends and enough time passes for whatever exclusivity thing may be going on, at least everyone could load in and watch some space marines punch and shoot orks and vice versa and that would give CA a lot of useful feedback on core aspects of combat, like animations, units following orders etc.

Thoughts? Is that even possible?