But then in the interview, they won't ask you anything about how you "connect to the business". So, even if you can bring a lot of value to a company, you won't

But then in the interview, they won't ask you anything about how you "connect to the business". So, even if you can bring a lot of value to a company, you won't even be hired because you fail the systems design interview. One can only know so much. If on top of all the intricacies about distributed systems, software engineering, dbs, leadership and a large etc., we also need to know about the "business", well, what are we then? How do we acquire so much knowledge without sacrificing our entire free time? Sure thing there are individuals out there who know a lot about many things, and those are probably the ones companies want to hire the most. But what about the rest of us?