Steem has everything other blockchains need:
A community of people who believe in what Steem has to offer.
That is by far our greatest and most important advantage.
As for the tech side of things, Steem has proven that it can handle what most others can't as far as transactions go, and in "real time" (under 3 seconds).
Proven in action, not theory or 'testing', but real transactions on the blockchain, by real people.
Apart from that, we also have added features such as the DAO/SPS which ensure our governance model can be independent of all foreign entities out there, hence making Steem unique in so many ways that many others could only wish for.
We have literally put Steem on the map of social networking and blockchain tech that is so unique and puts us at the head of any endeavour that wishes to tokenize the web.
I could keep going on, but yes, at the end of the day, we have a perfect opportunity to make Steem become everything it set out to be.