aespa literally had 1 whole year to build up their fanbase including having the national hit Next Level, before releasing a physical album Savage and it did 500k+, not million. They cracked million with their subsequent album
Ive and Lesserafim similarly did 400-500k for debut album. And they hit million with the next one. It is normal trajectory because these are new group with high growth potential.
You cant compare them to older groups which suddenly double/tripled their sales 3-4 years down their career when they dont have any recent big hit/another breakthrough. This exclude GIDLE obviously which hit big in later stage of their career.
