It seems to me that cranking up the heat on developers would not be the only way to harness this increase in productivity, if it's real. For instance just let projects finish on time, or on a predictable timeline.

End the "software crisis" that's been with us since the 1960s. This would result in a quality-of-life improvement for every manager, stakeholder, user, etc.

Another idea: Alleviate some side effects of the crisis, such as vital functions being taken care of by "shadow IT" for decades.

Abolish Excel as the front end for business computation.