Earlier quoted context omitted.
You can do all of these things already. In Europe at least. I have a TenX debit card that I can use everywhere VISA is accepted! Bought iphone and car with it
That's not spending BTC on something, that's selling BTC then buying things in your local currency. Until prices are regularly set (and stable) in BTC, holding 80+M in BTC is a huge risk.
If I order something with my CC in the US, prices are also denoted in dollars. But it withdraws from my Euro account with respect to a specific conversion rate.