The following stood out to me:
"Exit and voice themselves represent a union between economic and political action. Exit is associated with Adam Smith's invisible hand, in which buyers and sellers are free to move silently through the market, constantly forming and destroying relationships. Voice, on the other hand, is by nature political and at times confrontational."
In national and international politics we see a lot of "Voice" (in these terms) but I feel they are often ineffective because they are blunted by threshold effects, i.e. the resultant change is a softmax with temperature near zero.
People don't realise and utilise the power they hold by means of "Exit", especially as wealthy consumers who engage in these debates, who have more consumption and hence more influence as it's a "one dollar, one vote" system rather "one person, one vote". See for example how effective the response to Jimmy Kimmel was. The same thing was effective against Apartheid in the 1980s and can be applied through things like the BDS Movement.
Exit applies a much more continuous pressure where the effect of each actor is cumulative whereas Voice is more discontinous and requires a critical mass.