Interesting stats. I actually thought it might be even higher than that 15%. I read something recently that said the US accounted for roughly 50% of all bitcoin/crypto trading currently... though I can't remember where exactly I read that.

Regarding steem... I think they are genuinely trying to turn things around now. The unfortunate thing is they are trying to do with no money and a skeleton crew. Which is unfortunate considering this was a billion dollar project at one point. Why they didn't do anything for 2 years or so here is beyond me... I think that is the billion dollar question.

And yes, Coinbase used to be very particular about coins that did an ICO, though that seems to have gone out the window a bit with EOS. Though, remember that not all ICOs are the same. EOS was very careful to make sure theirs was compliant with the jurisdictions they were in, whereas many others were not.

In my eyes, steem should be a no-brainer to get on Coinbase, especially with the Coinbase Earn program. For whatever reason, steem just can't get on there...

I am hopeful that steem is trying to turn things around now. Though with a shoestring budget and skeleton crew, it is harder now than ever before.