The example of Mikhail Gorbachov's perestroika is relevant,aiming at minor improvement,he triggered the process of total disintegration

What if the pre-eventual actors   AOC  Sanders et al, don't really know exactly what they're doing or quite where they're going? 
What if, under the influence of statist ideology, they anticipate that a particular gesture will effectuate a system-preserving modification only to find out, after-the-fact of this gesture, that their intervention unexpectedly hastened (rather than delayed) the demise of this very system?.The example of Mikhail Gorbachov's perestroika is relevant, while aiming at minor improvements that would make the system more efficient, triggered the process of its total disintegration
These, then, are the two extremes between which political interventions has to find their way: the Scylla of "minor" reforms which eventually lead to total collapse or the Karybda of "radical" changes which in the long run merely fortify the system (Roosevelt's New Deal, etc)