I'm sympathetic to some of that.Socrates the great Greek philosopher highlighted the weaknesses in Democracy, when he opined that not all of the citizens were intellectually fit to exercise their vote.
He construed that those of low educational capacity were easily swayed by the false promises of smooth talking, snake oil salesmen populists. This resulted in inferior self interested candidates being elected to positions of power and inevitable corruption and crisis in the State.
Fianna Fail and Fine Gael are not of themselves corrupt, but always at risk of being corrupted.
A corrupt individual who wants to further themselves will always look at how they can influence power and place themselves in the parties of power.
Fianna Fáil's near chokehold on the office of Taoiseach prior to 2011 meant that they were the natural choice of the corrupt.
A few went for the bigger fish in a smaller pond of Fine Gael.
There was little point in being corrupt in Labour, and no point being corrupt in The Green, Sinn Fein, The Workers Party etc.
With the rebalancing of our electoral system that happened after 2011, Fine Gael should worry that those who want to feather their own nest will exploit the party.