At level 0 / build great value

With "are at level 0" it seems like a word is missing in order to understand...
maybe calssifed at level 0?
What is "build" in build great value?

The first level is what we call a level 0 business model - strategy companies that focus mainly on product technology and related services are at level 0 the best of them build great value propositions with a strong product market