People are late on Adele but it's better late than never. Her train is full force right now and she's selling BOTH singles and albums. 4,6 millions in ~3 months and another 350K this week
What I love about Adele's worldwide dominance compared to one other British female artist who recently dominated the charts is that people are interested in Adele for her and her music, hence why she has a huge crossover song and not just a successful album. Someone like Susan Boyle sold mainly because of the hype of a TV talent show. None of her songs made an impact.