European providers benefit from lower cross-connect fees in datacenters and more internet exchanges for easy peering. It's not surprising they offer more bandwidth at the same cost.
It's not like AWS or GCP have locations that are terribly far from major exchanges either.
> In North America, the median cross-connect price is $300, more than five times higher than $58, which is the median price in Europe.[1]
Of course, that difference means nothing to a hyperscaler, but it's led to a difference in pricing culture between the smaller providers.
1: https://www.fiercetelecom.com/telecom/study-u-s-fiber-cross-...