Cleon Industries became the Third Imperium. Cleon Industries shareholders can call themselves by whatever noble rank they like but the fact remains that as shareholders they get the final say on who leads the company.
What Lucan did, after 1116 years, was revert Cleon Industries to family (his) ownership and strip the shareholders of their shares and rights. The temporary suspension of the Moot for a year is mentioned, what is not mentioned that I can find is that the Moot returned after the hiatus. We know that the "shadow Moot" was instrumental in supporting Margaret, and yet ignored the "real" Strephon.