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Centralized or decentralized has nothing to do with profitable or unprofitable. Steem is unprofitable. Facebook is profitable.

I didn't think Facebook would ever be profitable but I was wrong. They know how to run a business and make a profit. It's this element which Facebook is good at which Steem is horrible at. Along with UX which Facebook is brilliant at and Steem is horrible at.

Facebook is not in the business of employing their users at all, you do know that?

Facebook seeks to grow as much as possible. If it means letting users get paid then they'll do it. The competitors like Google has no problem letting users get paid. Twitter also is talking about integrating cryptocurrency. At this time I don't know what Jack plans to do with crypto but it shows me that Twitter has some plans.