Space warfare is hard. You can't easily hide anything, so keeping a weapon very close is not feasible. Lasers don't work very well either because if the heat is

Space warfare is hard. You can't easily hide anything, so keeping a weapon very close is not feasible. Lasers don't work very well either because if the heat is enough to overheat the other satellite it's probably enough to overheat yourself. Jamming doesn't work very well in the age of super directional communications (see: SpaceX in Ukraine, which is not even designed to withstand jamming).