Here in France everyone has a Nespresso machine or two (I have three); you can buy Nespresso capsules from Nespresso shops, or alternative capsules in any supermarket, anywhere.
What Nespresso sells is simplicity and consistency, and an above-average taste.
I remember vividly the time before the Nespresso: when you went to have dinner at a friend's and they offered coffee at the end of the meal, you were terrified of what they might bring. I absolutely cannot drink the clear lukewarm water that some people (used to) call coffee.
Today you simply ask for your favorite Nespresso color, or choose among the ones available, and you're almost certain you're going to get something at least acceptable.