Mass population is moved by fear, but is that how concordance is manufactured across the executives of a set of countries: a few terrifying top-secret presentations, and IC has successfully reputation-assassinated a foreign company? Why would these countries agree if there was no breach and a cheaper price? What offer or threat besides a more expensive but more secure infra? I suppose if you view telcoinfra as defense assets then it's a no-brainer, but was this the calculus? Blackmail/Mafioso-tactics would be a good one, maybe: You have to buy from us, or we will reveal/do such-and-such horrible thing.
But if it's true this is economic, not security, and also that Huawei has superior value for money, then is it not just these countries accelerating their already decaying infrastructure, for the sake of pride?
"The phones are down." "Yeah, whaddayagonnado? At least we're not paying the Chinese to make them work."
Replace phones with other critical things China makes better for a better price, and the future of these countries may look like the past of the former-Soviet ones: a whole bunch of weird anachronistic tech resulting from an (in this case self-imposed) embargo. But at least it will be 100% built by subjects of approved countries. I suppose that is one strategy to fight back against the dominance of Chinese industry: just outlaw it.
The hilarious thing is, probably all these "approved suppliers" will have to purchase significant inventory from what is essentially Huawei's supply chain anyway. Seems much more like the tail wagging the dog, with corporate dishonesty dictating so-called natsec policy. Could it really be so twisted?