There are dozens of hard rocking metal bands in Europe, where good music is apparently still appreciated.
We love our hard rock here in the UK. Well, we kind of invented it...
To be fair, having taken a long blues sabbatical from it up until about, well, somewhere between 5 and 10 years ago when I came back to the rockers, I have found quite a few American bands who are (or were - not sure how many are still going) keeping it alive. Bands like Little Caesar, Hogjaw, The Temperance Movement, Chickenfoot, Black Stone Cherry...
Some have a strong country influence, which is perhaps to be expected from your side of the pond, and makes for a more interesting mix sometimes; Cadillac Three springs to mind, and influences in one or two of the above too.
But we never really had that country thing to 'dilute' our hard rock here, even though we keenly adopted the blues way back. We took to the harder end of the electric blues spectrum generally speaking, and this is perhaps what led to our rock having that harder edge.
I mean, there are always exceptions, but I think this is generally about true...???