Do you expect the moon to fall on the earth soon, from loosing its kinetic energy? If there is no interaction (as with tides for example) kinetic energy is conserved and the moon will still be turning around the earth, even though it is moving away due to the tidal interαction, when the sun becomes a giant dwarf. This is because the moon is captured around the earth by the gravitational force, a very weak force in comparison to the electromagnεtic one, but effective for large masses.
The planetary model for the electron around the nucleus fails because of the nature of the electromagnetic interaction: an accelerating charge radiates away energy , as the Maxwell equations show. The electron in orbit has angular acceleration and it will radiate electromagnetic waves, classically , and fall in the nucleus. So the planetary model fails since atoms exist and are stable .
The Bohr model postulated stable orbits in the planetary model, i.e. radiation forbidden for orbits with transitions fitting the data for the hydrogen atom. It has been superseded by quantum mechanics and the solutions of the Schrodinger equation for the Hydrogen atom.