I've looked into my magic eight ball and it told me this:

Ethereum does DAPPS in their own language, Stratis does it with C#. Lisk indeed with Javascript. To each their own. But... where will developers go to? If hardly any apps will be developed for Stratis or Lisk... only Ethereum survives. But I figure in the beginning none of these platforms will be left aside... each will have their niche to begin with.

If one platform all of a sudden grows dramatically then one of these 3 will suffer most. Because of Stratis being implemented in Azure I think Lisk, in that scenario, will barely survive.