I have worked at organizations where most engineering and many product decisions were made bottom-up, through written RFDs and ADRs, and horizontal conversation

I have worked at organizations where most engineering and many product decisions were made bottom-up, through written RFDs and ADRs, and horizontal conversations between lead, staff and principal engineers. The tradeoff is that it can take weeks, months or years to both agree or schedule work on larger projects, where other (especially small) organizations might take hours to weeks.