That is some of the reasoning behind the US Constitution. Federalist 9 and 10 address the effectiveness of direct democracy at a small scale and the utter failure that direct democracy is at a large scale. Once you get past a tribe size, opposing factions come into play. Factions are not bad but direct democracy at scale leads to the largest faction ruling over all. Ideally, all factions come to a consensus on what is best for all instead of fighting for total control.