We now have a Queen, and the role of the monarchy is entirely ceremonial.
Back in 1849 the Danish king signed the constitution, making the role of the king ceremonial, and giving us democracy.
Sure, this was in the aftermath of the French revolution. And hadn't the Danish king signed away his power we would likely have had a revolution.
Yes, monarchy in it's original/natural form is horrific. It's essentially a dictatorship, no different. But I'd money and a ceremonial role can grease the wheels for a peaceful transition is that so bad?
In Britain they don't have a constitution the same way. But I see many events throughout british history where the crown gradually signed away power.