It took the literal burning down of aristocratic homes during the english reforms of 1832 for the House of Lords to finally sit down with Earl Grey and hash out a bill that would finally grant large populated cities like Manchester actual voting rights.
The French Revolution was still fresh in minds of these elites - the July Monarchy having just taken place - and yet still they let it escalate to the point of near civil war.
The point is a guillotine somewhere else is good. Guillotines at home don’t particularly hurt the rich as a class. (It’s debated whether France’s elite actually consolidated wealth and power through its revolutions.)
Not the best success story, granted, but socialist revolutions in China and Russian Empire had definitely hurt the rich as a class. Definitively even.
"A riot is the language of the unheard." ~ MLK Jr.