It is far too early to say anything for sure. Steam Broadcast could end up vying with Twitch and Azubu for the attention of viewers or playing the role of a supplementary streaming platform.
As said in article, too early to say but i would hope that Stem doesn't lock down its games to be streamed on broadcast only as that might hurt them more than helping.
I dont think valve would lock down the games on steam tbh.
Maybe not as a direct competitor, just as an alternative
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