Out of curiosity, is there anything technical the Spanish authorities could do to block Starlink (i.e jamming)? Or are legal/bureaucratic measures the only solution?
Starlink terminals are jammable, but the jamming source will need to be in it's FOV and it uses quite a focused beam. Not particularly viable for an entire nation.
The ground stations would be a lot more vulnerable, but cutting the cable would be a lot easier than flying a Ku/Ka band jammer overhead.