I see an awful lot of whitewashing to cover mistakes going on.
"The first question is how Israel was able to get that many vaccines when supply is short? It is not because—according to reports—Israel paid about $30 per dose, almost double what other nations did. [...] The answer: Israel is a great pilot country for the pharma companies—small and able to put together a massive vaccination program quickly and effectively." https://www.brookings.edu/blog/up-front/2021/01/05/the-secre...
And Canada isn’t the only one: Australia, New Zealand, Singapore. Vietnam really screwed itself over trying to get domestic production going (homegrown and in-licensed). Once Delta got hold they saw a 400x increases in cases. Once it dawned on them vaccines were the only out, then acquired whatever they could by begging and borrowing. Now they are looking at a loss of foreign investment and a possible recession.
Except that, now, Canada (78%) has a higher vaccination rate than most western nations, including the US (65%). And there is zero talk about loss of foreign investment.
b) Israel agreed to the extraordinary term of sharing their data with Pfizer, in exchange for getting doses early, something Canada almost surely won't be willing to do
c) The Israeli PM Netanyahu was facing significant electoral challenges and desperately needed a win, so there was a lot of political will
There's just a lot of willingness to go for "good enough" solutions in emergency situations, and forget the rules for the duration.
Civil defense culture also helps, in that it's trained people to reason about countermeasures that are not 100% ("hermetic" in the local lingo) - you still get in the stairwell to protect from shrapnel, even if a direct hit will kill you anyway. People don't have the gut reaction of betrayal when a 90% countermeasure fails sometimes.
Bibi's career at this point was up against a wall, and he was willing to do anything to 'be first'. Israel has a cagey foreign policy apparatus, I have no doubt they went 'all in' on this, calling in favours, applying pressure in addition to the regular negotiations.
The US nationalized production in that government decree made it illegal to ship to anyone else unless US contracts had been satisfied in full (NOTE: I am not judging this at all. The merits of it are arguable, but it does point out a weakness in a reliance on free trade). The change of government didn't change this an iota.
The defense production act dictated that 100% of production was for the US until the government said otherwise. Moderna and Pfizer were both forced to supply Canada from the European factories as a result, even long after US vaccine manufacturing far exceeded consumption.