With the changes to the copyright policies on YouTube the industry is starting to react in various ways. Some developers and publishers are doing so via Twitter.

Blizzard (both on the Starcraft and Diablo official accounts) and Capcom gave brief responses, asking users to contest the claims and promising quick approvals. Blizzard also mentioned that longer term solutions are being worked on.

Deep Silver was even more detailed, giving a very through policy statement and expressing that the company "has no intention of preventing players, who like to create gaming content on YouTube using our games, from doing so."

Naughty Dog also responded, even if their response was a lot less clear (or positive) than the ones issued above, stating that generally they don't like having their game monetized, but they don't have a policy yet. That said,  their content on YouTube is handled by Sony.

We'll see if more publishers and developers will chime in. At the moment the industry seems to be struggling to find a common answer on the issue, but we'll see how things will develop in the medium and long term.