I think Lisk is like Android. Since Lisk is based on JavaScript, which can be easily used even for newbies in computer programming, it can be widely spreaded to users. I also agree to 'easy-to-use' is one of the important characteristics for successful business (in any kind of business, including blockchain).
Anyway, the Lisk developers made Lisk (like android) and Lisk SDK (like Android SDK). So, the users can make an application using the SDK.. even without deep understanding about the detailed Lisk system (according to the developers, it is the world-first to provide such SDK. this is interesting.).

If there will be many many many Lisk users, Lisk will be successful as the developers hope. However, I don't know well.. so far, since it is in the beginning stage.

Sorry for my poor english, and thank you for your interest!