I would take it a step further... Why should it be hard for money to make a mark? Why should the voice of someone who sacrifices little or who has no or next to no "skin in the game" be considered equivalent to the voice of someone who is willing to sacrifice real, tangible resources?
In modern corporations, there is a distinction between those who have stake in the future of the firm (shareholders), those who are trusted to act on their behalf (board, executives, and employees to a lesser extent), and those who receive services from the firm in exchange for revenues (clients and customers).
Customers do not make managerial and strategic decisions for the firm, and for good reasons. Indeed, does anyone really care exactly who is running walmart or amazon or apple so long as their products and services provide value? Why do people tend to see governments, essentially massive corporations, as inhabiting such a different realm, expecting them to follow entirely different laws of human behavior?