If the UK abolished the monarchy, tourism attractions like Westminster and the Crown Jewels would still exist
It's peanuts in the scheme of things. The royal family aren't even that rich amongst the billion class in the US.
yes
> government can magic up 150 billion
that is also a tremendous amount which the next British generations will labour decades to pay off, just so today's pensioners can heat their homes to the 25C they are used to, and still have their ski outings in Zermatt.
It is a tremendous amount indeed, but i don't know why you think it's only pensioners and skiers who would benefit from not having to choose between food and energy.