That is true if you limit yourself to preserving some political structure. It is not true if you consider revolutions and radical changes to be politically legitimate. There is no ideology or system you can encode in prescriptive rules that endures forever. Capitalism(s) has had a long run, but so did feudalism(s). I pluralize because those systems have changed. What happened to feudalism in the end was that its fundamental tenets were overthrown. What remained could not be called feudalism. It remains to be seen if and how that occurs with capitalism. What can be discarded to make the incumbent institutions endure? How long will that last?
I have only seen recent studies finding that campaign spending has little impact on electoral outcomes; if you have evidence that elections can be bought, please provide it, so that I may be enlightened.[1]
TLDR: authors designed and performed some actual experiments whose outcomes support the thesis that campaign spending works - better for a challenger than for an incumbent.
