But if it were possible to create value for the larger crypto ecosystem as a whole, would it not make sense extend the reach of Steem development beyond its own boundaries to serve for a smoother, open flow of info & currency between platforms...?

From a previous post of yours talking about cross-chain technology, I believe this is what we should be more concerned about and not a competition of no end. Bridging the gap and unifying the crypto chains will bring development not to one but several blockchains