"Twitter succeeded (as it were) because people used it", and they did because the Twitter API is basically the "Hello World" of using a web service !

This meant ANY platform where a developer cared to bring out a Twitter client had it, and hence more people could jump in quickly.

Secondly, really creative users made Twitter what it is today with Retweets and Hashtags.

Twitter would be wise to not start an evaporative cooling effect.