I don't see it being a binary choice for content creators. I believe content creators will be able to 'cross-post' and open up the pool of rewards and tokens available to them. I believe their will be 'aggregation sites' that enable this; it will be the norm to post on these aggregators and for token holders in those communities to decide if/ how to reward posters.
I've heard cross-posting discussed before. An aggregator site like that with a killer UI might prove very popular.