Lack of Trust or Lack of Relationships??

There was a time when the culture in the workplace was not discussed; learning to navigate and network was the key so no discussion was required. There was no talk of building trust, it was earned.Over the past 15 years, I have noticed increased focus on words such as trust and transparency with less interaction between leaders and their teams. Technology has increased the gaps in communication between leaders and teams and without relationships, trust cannot be built. My fear is the gap will widen. Are leaders too busy running from meeting to meeting to build relationships with their teams? Is delegation from leaders regarding key tasks to their teams an activity of the past? Are team members missing opportunities because leaders don't delegate? Have leaders stopped delegating because they are 1) Expected to know ALL the details and/or 2) They cannot trust that the activity will get done? Are employees held accountable for doing their job and meeting expectations?

These are pivotal questions and it is hampering how work gets done. My last question is, what needs to change to improve this?