basically every european country? they've all had much larger datacaps than north america for years preceding 5g and most are quite densely inhabited.

I’m from Germany and I don’t know a single person with unlimited mobile data. That’s very rare here.

And yet probably everyone you know in EU has a cheaper Internet per GB that folks in the US. I have 2 SIM cards, one provider charges me $10/GB, while the other has a 2-GB packet for $6.

In Finland I pay 20€/mo for unlimited data (bandwidth capped at 200 Mbps). With some shopping around it can be cheaper/have more bandwidth. The pricing has been similar at least since 3g. And I recall having a similar deal in the UK five years ago.

There's also 28 GB EU roaming per month included, and 2.23€/GB after that.

Both of those prices are considerably more expensive than what I pay for service in the US. Even the cheaper one is more than 2x more expensive than what I pay per gig, including unlimited calls and texts + roaming to a lot of North America.

Who's your provider if you don't mind me asking?

Mint. 15GB for $20/mo works out to $1.33/GB while your 2GB plan is $3/GB.

But there are other MVNOs out there like tello which also have a 2GB/$6 plan in the US, and other MVNOs which offer unlimited data for like $25-30/mo like visible and US Cellular.

Plenty of cheap MVNOs out there these days.

Tello is actually what I use for my secondary data, Fi is my main (mostly because I travel somewhat and the data costs the same in all the destinations I care about without having to juggle SIM cards).

I'm not a good case study because I rarely use more than 2gb in a month, so Mint would come closer to $10 a gig... :)

£10/month pay as you go SIM for 30gb here in the UK and im sure there are better offers