Therefore, software developers as well as project managers should first focus on meeting the business concerns and implementing the use cases.

This clearly sounds obvious, but too often the focus of enterprise projects starts drifting away into other concerns. Developer effort is spent on implementation details or features that have little benefit for solving the actual problem. How many logging implementations, home-grown enterprise frameworks, or over-engineered levels of abstractions have we seen in the past?

Non-functional requirements, quality of software, and so-called cross-cutting concerns are in fact an important aspect of software development. But the first and main focus of all engineering effort should be directed to meeting the business requirements and developing software that actually has a purpose.