I personally do think that Steemit, the blogging platform will still be here in the next 5 years but will be overshadowed by other Steem platforms.

The next 5 years, DApps like Dlive (The Twitch of Steem), DTube (Youtube of Steem),  DSound, Steepshot, Musing (Quora of Steem) and games like Steemmonsters will dominate the Steem blockchain and the internet.

One problem I see with blogging platforms is that not everyone has the time nor the patience to write medium to long articles. People only want to enjoy a platform and blogging/writing is kinda like a job and we know people hate putting even a little effort on anything. Plus, not everyone is confident in writing especially formal english. So DApps who works like the current social media platform but instead of getting pure-likes people get rewarded for posting their content will be a big hit. If all goes well, the next five years, Steem will overtake at least half of what the current social media platform it is now today.