It's a bit more complicated. In France vaccination has only been open to everyone one month ago, (and those people − including me − only had one dose so far) and in the UK the waiting time between the first and second dose is roughly twice higher than in most countries, which means there's still a significant fraction of the population that just can't get fully vaccinated yet (my brother must wait another month before getting his second shot).

I've been able to book a time for vaccination for weeks now but the first free time wasn't until the end of July.

We're also about 7.75% ahead of the US when it comes to the percentage of the total population who has gotten their first dose, with the trend still being upwards. So I'd say that the problem isn't really willingness.

What major countries? I live in Spain and in most regions people under 30 still can't get vaccinated.