Indeed they are, IMO this is the real number 1 reason behind the US tariffs, as well as behind his anger against Brazil, even more so than the prosecution of his fash club buddy.

What you do is get together with a bunch of other countries and announce it as a block. The US can only keep shooting itself in the foot so much. The thing they should've done is, very soon after the US tariffs were announced, say "We think this is a fantastic idea by Mr. Trump. Aligned with his views, we are instituting accompanying digital tariffs to fix the digital trade deficit. We're sure he'll agree that the trade balance should be corrected in both the physical as well as digital worlds".

The UK is effectively a colony of the US so them backing out is entirely expected. Luckily, other countries aren't. I think Brazil, Vietnam (?), Thailand (?) are ones that have already set a date for when it's being instated, and I haven't heard of them backing out. There's probably more. The EU has also confirmed today that they won't be cancelling the Google fine, though we'll have to wait and see what happens to their DST proposals. Given their serious lack of spine as well as how far the EU has gone to the right, I do expect them to cancel it, but who knows.

And again, there's a hundred other protectionist barriers that can be put up. This is the smartest way, salami slicing, as China has figured out decades ago. You begin very small and just ramp it up. You begin with something like banning Twitch because of moral concerns. Maybe even just from 8 to 8, when kids are up. Then you say national security concerns mean data centers of critical infrastructure all have to be hosted in the country. Then you expand that. Then you make Whatsapp (or whatever is the most popular messaging app) do a JV with a local player because it's a national security risk. And so on.

But Western governments don't have the wit to execute this, in which case a cruder measure such as a digital tariff is what's left.