Very different cultures. The US is still a culture of personal accountability and freedom. If you aren't hurting anyone you can do as you please. The UK skews toward rules for the sake of rules. Sadly the US is also moving in that direction, but mercifully still trails the UK.
On the US side its very "individual good" focus, whereas in the UK (and Europe in general) its more "community good" focused.
This may be partly a function of density- with higher density comes more human interaction in a smaller space.
The US also had a long period of no, or minimal govt, over very wide areas. This lead to a culture of personal security etc (think Westerns with people carrying guns).
Most Americans see govt at best as a necessary evil, who is actively working "against my interest." Whereas most Europeans see govt as an effective way to "promote community interest". (I'm referencing govt as a concept here, not as a political or party construct. In other words you might be against the people currently in govt, but still appreciate that there should be a govt.)
In the UK, you can much more easily wrap all that up, and deny existence to those markets and even to import of that equipment.
And it's beyond culture. The UK holds an active monarchy and a hereditary house of parliament. The citizen simply does not have the same status and is unavoidably a "subject."
"The most recent grant of a hereditary peerage was in 2019 for the youngest child of Elizabeth II, Prince Edward"[2]