I'm sorry you got the wrong impression there but I thought "non US solutions ... AND startups like Hyperion" got the message across.
It got the *wrong* message across. :)
Examples are non US solutions like pebble bed, accelerated thorium and startups like Hyperion
My understanding of English says that this sentence is listing 3 'non-US' solutions: (1) pebble bed, (2) thorium, (3) Hyperion. The 'and' is normally used for last item in a list like this, it does not separate the last item from the previous ones (the adjective used as the prefix to the list still applies to it). Just an FYI.
A lot of the well established US stuff is just a drain on the taxpayer
Hyperion is a private startup, the taxpayers are not involved.
I was also unaware that General Atomics had anything in pebble bed within a couple of decades of implementation
You didn't specify imminent implementations (I don't know of any), only 'solutions'. My only point was that US companies and research institutions are just as heavily involved in PBMR design/research as anyone else.
As for why there are no current implementations, have you considered the possibility that PBMR designs might have issues of their own? Perhaps it just needs a little more work before it can become viable, and that work is being done by many, including US companies/universities.