  We discuss the possible relation between certain geometrical properties of
the loop space and energy evolution of the cusped Wilson exponentials defined
on the light-cone. Analysis of the area differential equations for this special
class of the Wilson loops calls for careful treatment of the ultraviolet and
rapidity divergences which make those loops
non-multiplicatively-renormalizable. We propose to consider the renormalization
properties of the light-cone cusped Wilson loops from the point of view of the
universal quantum dynamical approach introduced by Schwinger. We conjecture and
discuss the relevance of the Makeenko-Migdal loop equations supplied with the
modified Schwinger principle to the energy evolution of some phenomenologically
significant objects, such as transverse-momentum dependent distribution
functions, collinear parton densities at large-$x$, etc.
