English to Russian Bus/Financial Business/Commerce (general) business

Помогите, пожалуйста, перевести: white space
Контекст: Many companies struggle to succeed when they enter
into “white space" activities - new commercial oper-
ations which are notably outside their existing core
business and current competencies. They may recognize
there is a viable commercial opportunity there but almost
invariably companies try and serve new customers us-
ing their existing business models. More often than not.
these expansion efforts are a failure.

To move into and harness a white space opportunity
to grow your enterprise, start by developing a business
model which will work for that new space. Don't expect
your old business model to transfer across. Specifically,
you have to rework the four building blocks of any viable
business model: