Micropayments in games, e.g, for player-created content or prizes, is one of the ways that blockchain tech could genuinely start to get mainstream traction. Not sure about Steem, but I know that Stratis are building a Unity library for their C# blockchain platform, so they've obviously worked out that it's viable. Stratis is C# native, though, so there is one less hoop to jump through. Most of Stratis's code is still in stealth mode - but it's maybe worth keeping an eye on the project to see how it pans out.