One could argue that Solon the Lawgiver did #1 2600 years ago - abolishing debt slavery, supposedly abolishing most debts, freeing some public lands, coming up with council of Four Hundred.

https://en.wikipedia.org/wiki/Solon

Of course Oligarchs still took power afterwards from time to time - The Eupatridae (Aristocratic Families), then tyranny by Peisistratos.