There is a saying "American trust companies more than their government, Europeans trust their governments more than companies" when nobody should trust either.

Sometimes a company's incentives are going to be aligned with their users, but a lot of the times they won't and consumer protection regulation is useful.

Sometimes a government will have the good of their citizens in mind, and a lot of the times they will seek money and power just like companies do. Lobbies, fines, overreaching regulation.

The UK (and EU's attempted Chat Control) is some fascist bullshit. But allowing you to own the device you paid for and use it as you please (including letting you install whatever software you choose to) isn't.