You state that non-US healthcare "wouldn't have paid for this either", but later you mention "need to travel to the US because there are no [PB] centers" (which is true). But then you continue "the doctor wouldn't have even considered it as a treatment option".
Now, I'm not an expert at PB treatment, but the fact that patients have to travel would suggest that at least some do that; I'm not sure if the treatment is partially or fully covered. But a quick Google seems to suggest that this option is known, and that there is lobbying to create such a center in Canada; and they acknowledge that the treatment, lasting 6-8 weeks in a distant city can be challenging.
But if it isn't an option considered or offered, why bother to build something with no demand?