"Laugh number two was that it was very obvious form the outset that one major intended outcome of this was they US manufacturers would get the business ..."
I think you are mostly wrong about that. As expected it was Ericsonn and Nokia who would pick up most of the hardware business. It was reported by Reuters that
"June 12 [2020]- The United States is in talks with Brazil and local telecommunications companies on funding the acquisition of 5G gear produced by Ericsson and Nokia."
[ Factbox: Deals by major suppliers in the race for 5G, June 2020, Reuters ]
The "Open RAN coalition" is active in defining standards for modularity so that components are interchangeable. This is a good thing for the industry and smaller players, and a (short term) bad thing for Huawei whose existing systems are monolith in design. One result of that is the ability to swap in software modules where it makes economical sense - and that is where US and UK companies may get some business.
For example --- "[UL Company] Metaswitch has a 5G product for handling network traffic that can run on public cloud infrastructure. Customers could rely on the company’s software atop cloud infrastructure rather than adding capacity in their own data centers to support additional network use at higher speeds. ". Metaswitch was recently purchased by Microsoft.
Open RAN is international group of companies with US center of mass. Members Vodaphone, ARM, Nokia, NEC and non-US. Oddly, Ericsonn is not listed - perhaps that is to avoid offending the CPP or Huawei. See [ " Who’s Coming to Huawei’s Support? Its Biggest European Competitor
Even though Ericsson is benefiting from sanctions, CEO Börje Ekholm felt moved to lobby for Chinese rival to ward off a backlash from Beijing ", WSJ ].