That's exactly what Americans did.
A dictator who enriches himself and his family, calls the press "the enemy of the people," calls immigrants rapists and killers, and punishes people who disagree with him.
According to the Constitution, Trump does not have to concede.
Democracy moves on without him.
The Russian state media is especially unhappy. They must expect a price to be paid for meddling in American (and other) elections, not to mention their warmongering in the former Republics. And let's not forget that they can't look forward to the disintegration of NATO anymore.